Catherine, Princess of Wales laughs with students on the Childhood Studies programme at the University of Leeds on January 31, 2023 in Leeds, England. The Princess of Wales is undertaking engagements in London and Leeds this week as part of the launch of the Shaping Us campaign to raise awareness of the unique importance of early childhood. Chris Jackson/Pool via REUTERS 

Priyanka Chopra laughs during the ceremony where the Jonas Brothers will unveil their star on The Hollywood Walk of Fame in Los Angeles, California, U.S., January 30, 2023. REUTERS/Mario Anzuoni 

Britain's King Charles III laughs during a visit to the headquarters of cereal manufacturer Kellogg's in Manchester, north west England, on January 20, 2023. - Kellogg's is the largest cereal factory in Europe and biggest Corn Flake factory in the world. The manufacturer has been a holder of the Royal Warrant since the reign of King George VI and cereal from the business was historically delivered to Buckingham Palace in a small van called Genevieve. PAUL ELLIS/Pool via REUTERS 

Canada’s Prime Minister Justin Trudeau shares a laugh with Flo CEO Louis Tremblay during his visit to a production facility of electric vehicle charger manufacturer Flo in Shawinigan, Quebec, Canada January 18, 2023. REUTERS/Mathieu Belanger 

Canada’s Prime Minister Justin Trudeau shares a laugh with a worker during his visit to a Flo Electric production facility in Shawinigan, Quebec, Canada January 18, 2023. REUTERS/Mathieu Belanger 

Democratic Caucus Chairman Rep. Pete Aguilar (D-CA) laughs during a news conference with House Democratic leadership including, Rep. Richard Neal (D-MA), Rep. Brendan Boyle (D-PA), Rep. Rosa DeLauro (D-CT) and Rep. Ted Lieu (D-CA), at the U.S. Capitol in Washington, D.C., U.S., January 10, 2023. REUTERS/Sarah Silbiger 

Democratic Caucus Chairman Rep. Pete Aguilar (D-CA) laughs during a news conference with House Democratic leadership including, Rep. Richard Neal (D-MA), Rep. Brendan Boyle (D-PA), Rep. Rosa DeLauro (D-CT) and Rep. Ted Lieu (D-CA), at the U.S. Capitol in Washington, D.C., U.S., January 10, 2023. REUTERS/Sarah Silbiger 

Democratic Caucus Chairman Rep. Pete Aguilar (D-CA) laughs during a news conference with House Democratic leadership including, Rep. Richard Neal (D-MA), Rep. Brendan Boyle (D-PA), Rep. Ted Lieu (D-CA), and Rep. Rosa DeLauro (D-CT), at the U.S. Capitol in Washington, D.C., U.S., January 10, 2023. REUTERS/Sarah Silbiger 

U.S. House Republican Leader Kevin McCarthy (R-CA) laughs with his Floor Director John Leganski at his side as he is nominated for Speaker of the House before the start of a late night 14th round of voting for a new House Speaker on the fourth day of the 118th Congress at the U.S. Capitol in Washington, U.S., January 6, 2023. REUTERS/Jon Cherry 

U.S. House Republican Leader Kevin McCarthy (R-CA) laughs with his Floor Director John Leganski at his side as he is nominated for Speaker of the House before the start of a late night 14th round of voting for a new House Speaker on the fourth day of the 118th Congress at the U.S. Capitol in Washington, U.S., January 6, 2023. REUTERS/Jon Cherry 

U.S. Rep. Matt Gaetz (R-FL) laughs with Rep. Marjorie Taylor Greene (R-GA) shortly before he nominated former President Donald Trump for Speaker of the House inside the House Chamber on the third day of the 118th Congress at the U.S. Capitol in Washington, U.S., January 5, 2023. REUTERS/Evelyn Hockstein 

U.S. Rep. Matt Gaetz (R-FL) laughs with Rep. Marjorie Taylor Greene (R-GA) shortly before he nominated former President Donald Trump for Speaker of the House inside the House Chamber on the third day of the 118th Congress at the U.S. Capitol in Washington, U.S., January 5, 2023. REUTERS/Evelyn Hockstein 

Rep. Marjorie Taylor Greene (R-GA) and newly elected freshman Rep. George Santos (R-NY), facing a scandal over his resume and claims he made on the campaign trail, laugh together as they sit together in the back row of the House Chamber during a 9th round of votes for the new Speaker of the House on the third day of the 118th Congress at the U.S. Capitol in Washington, U.S., January 5, 2023. REUTERS/Evelyn Hockstein 

Rep. Marjorie Taylor Greene (R-GA) shares a laugh in the back row of the House Chamber with newly elected freshman Rep. George Santos (R-NY), facing a scandal over his resume and claims he made on the campaign trail, during a 9th round of votes for the new Speaker of the House on the third day of the 118th Congress at the U.S. Capitol in Washington, U.S., January 5, 2023. REUTERS/Evelyn Hockstein 

House Republican Leader Kevin McCarthy (R-CA) laughs inside the House Chamber during an 8th round voting for a new Speaker on the third day of the 118th Congress at the U.S. Capitol in Washington, U.S., January 5, 2023. REUTERS/Jonathan Ernst TPX IMAGES OF THE DAY 

U.S. Rep. Matt Gaetz (R-FL) and Rep. Marjorie Taylor Greene (R-GA) laugh together on the floor of the House of Representatives as a 7th round of voting for a new Speaker begins on the third day of the 118th Congress at the U.S. Capitol in Washington, U.S., January 5, 2023. REUTERS/Evelyn Hockstein 

U.S. Rep. Matt Gaetz (R-FL) and Rep. Marjorie Taylor Greene (R-GA) laugh together on the floor of the House of Representatives as a 7th round of voting for a new Speaker begins on the third day of the 118th Congress at the U.S. Capitol in Washington, U.S., January 5, 2023. REUTERS/Evelyn Hockstein 

Incoming Democratic Leader Rep. Hakeem Jeffries (D-NY) laughs as he leaves a late night session of the House where Republicans forced the House to adjourn rather than vote again on the next Speaker of the House, while the competition for Speaker of the House continues, on the second day of the 118th Congress at the U.S. Capitol in Washington, U.S., January 4, 2023 REUTERS/Jon Cherry 

U.S. Rep. Andy Biggs (R-AZ) laughs with a fellow member on the floor of the House prior to another round of voting for a new House Speaker on the second day of the 118th Congress at the U.S. Capitol in Washington, U.S., January 4, 2023. REUTERS/Jonathan Ernst 

U.S. Rep. Marjorie Taylor Greene (R-GA) laughs on the House floor after House Republican leader Kevin McCarthy (R-CA) lost in a first round of voting in the race to be the next Speaker of the House on the first day of the 118th Congress in the House Chamber of the U.S. Capitol in Washington, U.S., January 3, 2023. REUTERS/Evelyn Hockstein 

Ben Sure and Shauna Steward laugh after their train was cancelled due to VIA Rail service stoppage around Cobourg, Ontario, Canada December 24, 2022. REUTERS/Nick Lachance 

Rep. Jason Smith (R-MO) speaks while House Minority Leader Rep. Kevin McCarthy (R-CA) has a laugh with Rep. Steve Scalise (R-LA) during a press conference at the U.S. Capitol in Washington, U.S., December 14, 2022. REUTERS/Mary F. Calvert 

Kennedy Center Honorees singer-songwriter Amy Grant and U2 band member David Howell "The Edge" Evans laugh as U.S. President Joe Biden speaks during a reception for the Kennedy Center Honorees in the East Room of the White House in Washington, U.S. December 4, 2022. REUTERS/Anna Rose Layden 

Kennedy Center honorees U2’s Bono and actor George Clooney laugh during a group photo during the reception for Kennedy Center honorees ahead of the official gala at the State Department in Washington, D.C., U.S., December 3, 2022. REUTERS/Sarah Silbiger 

Kennedy Center honorees U2’s Bono and actor George Clooney laugh during a group photo during the reception for Kennedy Center honorees ahead of the official gala at the State Department in Washington, D.C., U.S., December 3, 2022. REUTERS/Sarah Silbiger 

U.S. first lady Jill Biden and French first lady Brigitte Macron laugh together during an official State Arrival Ceremony held by President Joe Biden for French President Emmanuel Macron on the South Lawn of the White House in Washington, U.S., December 1, 2022. REUTERS/Jonathan Ernst 

King Charles III laughs as he meets with staff and barristers to hear more about their work to?support, educate, and develop both aspiring and practising barrister members during a visit to The Honourable Society of Gray?s Inn on November 23, 2022 in London, England. Kate Green/Pool via REUTERS 

President of South Africa Cyril Ramaphosa, center, laughs as he is presented with seeds of the Leucospermum plant after touring the Temporate House with Britain's Prince Edward, the Earl of Wessex, at the Royal Botanic Gardens, Kew in London, Nov. 23, 2022. The President, accompanied by Britain's Prince Edward, the Earl of Wessex, visited the Royal Botanic Gardens, Kew. South Africa is one of the most biodiverse countries on Earth, and the visit will focus on the longstanding scientific and conservation partnerships between South Africa and the UK. Kirsty Wigglesworth/Pool via REUTERS 

President of South Africa Cyril Ramaphosa, right, laughs as he is presented with seeds of the Leucospermum plant after touring the Temporate House with Prince Edward, the Earl of Wessex, at the Royal Botanic Gardens, Kew in London, Nov. 23, 2022. The President, accompanied by Britain's Prince Edward, the Earl of Wessex, visited the Royal Botanic Gardens, Kew. South Africa is one of the most biodiverse countries on Earth, and the visit will focus on the longstanding scientific and conservation partnerships between South Africa and the UK. Kirsty Wigglesworth/Pool via REUTERS 

President Cyril Ramaphosa of South Africa, laughs as King Charles III speaks during the State Banquet held at Buckingham Palace, London, during the State Visit to the UK by the South African president. Picture date: Tuesday November 22, 2022. Aaron Chown/Pool via REUTERS 

Britain's Prime Minister Rishi Sunak laughs next to Foreign Secretary James Cleverly as they stand with dignitaries at a Ceremonial Welcome for President of South Africa Cyril Ramaphosa at Horse Guards Parade in London, Britain Tuesday, Nov. 22, 2022. Kirsty Wigglesworth/Pool via REUTERS 

Britain's Prime Minister Rishi Sunak laughs with Foreign Secretary James Cleverly as they stand with dignitaries at a Ceremonial Welcome for President of South Africa Cyril Ramaphosa at Horse Guards Parade in London, Britain Tuesday, Nov. 22, 2022. Kirsty Wigglesworth/Pool via REUTERS 

Britain's Home Secretary Suella Braverman laughs with dignitaries at a Ceremonial Welcome for President of South Africa Cyril Ramaphosa at Horse Guards Parade in London, Britain Tuesday, Nov. 22, 2022. Kirsty Wigglesworth/Pool via REUTERS 

Britain's Home Secretary Suella Braverman laughs with dignitaries at a Ceremonial Welcome for President of South Africa Cyril Ramaphosa at Horse Guards Parade in London, Britain Tuesday, Nov. 22, 2022. Kirsty Wigglesworth/Pool via REUTERS 

U.S. Vice President Kamala Harris shares a laugh with Philippines President Ferdinand "Bongbong" Marcos Jr at the Malacanang presidential palace in Manila, Philippines, November 21, 2022. REUTERS/Eloisa Lopez 

U.S. Rep. Marjorie Taylor Greene laughs as she attends a rally held by former U.S. President Donald Trump to support Republican candidates ahead of midterm elections, in Dayton, Ohio, U.S. November 7, 2022. REUTERS/Shannon Stapleton 

Pennsylvania Republican candidate for Governor Doug Mastriano laughs as he is cheered by supporters during a campaign rally ahead of the 2022 U.S. midterm elections in Newtown, Pennsylvania, U.S., November 7, 2022. REUTERS/Mike Segar 

Georgia Republican Gov. Brian Kemp laughs with his wife Marty Kemp and a young supporter at a campaign event in Ringgold, Georgia, U.S., November 6, 2022. REUTERS/Dustin Chambers 

U.S. Senate Democratic candidate Rep. Tim Ryan (D-OH) laughs alongside Rep. Joyce Beatty (D-OH) at a campaign rally the weekend before the midterm general election in Columbus, Ohio, U.S., November 5, 2022. REUTERS/Gaelen Morse 

Pope Francis leaves laughs with Bahrain's King Hamad bin Isa Al Khalifa, at the Sakhir Palace during his apostolic journey, south of Manama, Bahrain, November 3, 2022. REUTERS/Yara Nardi 

Pennsylvania Republican Senate candidate Dr. Mehmet Oz laughs while listening to former Governor of South Carolina Nikki Haley deliver remarks in Harrisburg, Pennsylvania, U.S., October 26, 2022. REUTERS/Hannah Beier 

U.S. President Joe Biden laughs at the Democratic National Committee Headquarters ahead of the U.S. mid-term elections, in Washington, U.S., October 24, 2022. REUTERS/Evelyn Hockstein REFILE - QUALITY REPEAT 

U.S. President Joe Biden laughs at the Democratic National Committee Headquarters ahead of the U.S. mid-term elections, in Washington, U.S., October 24, 2022. REUTERS/Evelyn Hockstein 

Brazil's President and candidate for re-election Jair Bolsonaro laughs as he arrives to attend a debate ahead of the runoff election, in Osasco, Brazil, October 21, 2022. REUTERS/Carla Carniel 

Stefanie Lambert laughs during a court hearing in Detroit, Michigan, U.S., October 20, 2022. REUTERS/Dieu-Nalio Chery 

Pilar Redondo Arribas, 55, laughs with occupational therapist Jesus Berdial during a session at Casaverde Neurological and Physical Rehabilitation Center in Navalcarnero, Spain, October 20, 2022. Redondo suffered a stroke last year which caused her to spend two weeks at a hospital intensive care unit. The stroke caused paralysis and spasticity in the right side of her body as well as aphasia, which affects her ability to communicate verbally. She does daily rehabilitation sessions to help improve her quality of life. "It’s a difficult situation for the whole family. As a daughter, I’ve had to take on responsibilities before my time, I’ve had to mature. But when I see how hard she works and how she manages to stand on her feet during therapy, it gives me hope. My mother is very strong-willed " says Redondo’s 17-year-old daughter Raquel. According to World Stroke Organisation, 1 out of 4 people over 25 will have a stroke in their lifetime. World Stroke Day is observed on October 29 to raise awareness about the high rates, the risk factors, and the signs of stroke to better prevent and support survivors. REUTERS/Susana Vera 

Pilar Redondo Arribas, 55, and neuropsychologist Johanna Moreno laugh as they carry out a therapy session at Casaverde Neurological and Physical Rehabilitation Center in Navalcarnero, Spain, October 20, 2022. Redondo suffered a stroke last year which caused her to spend two weeks at a hospital intensive care unit. The stroke caused paralysis and spasticity in the right side of her body as well as aphasia, which affects her ability to communicate verbally. She does daily rehabilitation sessions to help improve her quality of life. "ItÕs a difficult situation for the whole family. As a daughter, IÕve had to take on responsibilities before my time, IÕve had to mature. But when I see how hard she works and how she manages to stand on her feet during therapy, it gives me hope. My mother is very strong-willed" says RedondoÕs 17-year-old daughter Raquel. According to World Stroke Organisation, 1 out of 4 people over 25 will have a stroke in their lifetime. World Stroke Day is observed on October 29 to raise awareness about the high rates, the risk factors, and the signs of stroke to better prevent and support survivors. REUTERS/Susana Vera TPX IMAGES OF THE DAY 

UK Development Minister Vicky Ford, U.S. Treasury Secretary Janet Yellen, and UN Secretary General Antonio Guterres share a laugh as Guterres kneels before Yellen at the Annual Meetings of the International Monetary Fund and World Bank in Washington, U.S., October 14, 2022. REUTERS/James Lawler Duggan 

European Energy Exchange EEX CEO Peter Reitz laughs at the headquarters of the European Energy Exchange in Leipzig, Germany October 10, 2022. REUTERS/Annegret Hilse 

Former South African President Jacob Zuma laughs with his legal team at the High Court in Pietermaritzburg, South Africa, October 10, 2022. REUTERS/Rogan Ward 

Democratic Secretary of State nominee Bee Nguyen laughs at an Asian American and Pacific Islander (AAPI) campaign rally in Norcross, Georgia, U.S. October 7, 2022. REUTERS/Elijah Nouvelage 

First Lady Jill Biden laughs during an event honoring the Class of 2022 National Student Poets Program at the White House in Washington, U.S., September 27, 2022. REUTERS/Evelyn Hockstein 

Misty Copeland laughs while attending the Global Citizen Concert in New York City, New York, U.S., September 24, 2022. REUTERS/Caitlin Ochs 

Citigroup CEO Jane Fraser laughs after coughing during her testimony before a Senate Banking, Housing, and Urban Affairs hearing on "Annual Oversight of the Nation's Largest Banks", on Capitol Hill in Washington, U.S., September 22, 2022. REUTERS/Evelyn Hockstein 

Matthew Lipman laughs with his children in their living room in Modiin, Israel September 19, 2022. REUTERS/Nir Elias 

U.S. Senator Lindsey Graham (R-S.C.) laughs with U.S. Senator Richard Blumenthal (D-CT) following a news conference calling to designate Russia as state sponsor of terrorism, on Capitol Hill, in Washington, U.S., September 14, 2022. REUTERS/Tom Brenner 

Britain's Work and Pensions Secretary Therese Coffey laughs as she shelters under an umbrella ahead of the arrival of new British Prime Minister Liz Truss at Downing Street, in London, Britain September 6, 2022. REUTERS/Phil Noble 

U.S. President Joe Biden laughs as he interacts with people while attending a Labor Day celebration at the United Steelworkers of America Local Union 2227 in West Mifflin, Pennsylvania, U.S., September 5, 2022. REUTERS/Elizabeth Frantz 

Asif Altaf laughs as a group of friends who have attended Sir Syed University in Pakistan play a game of cricket in a shopping mall parking lot, the only space available with lights at midnight, when they can leave their homes after work and family duties, in Mississauga, Ontario, Canada September 3, 2022. REUTERS/Carlos Osorio 

The 79th Venice Film Festival - Photo call for the film "Argentina, 1985"- Venice, Italy, September 3, 2022. Director Santiago Mitre and actor Peter Lanzani share a laugh. REUTERS/Yara Nardi