Dancers wait before the opening ceremony of the Opera Ball in Vienna, February 4, 2016. REUTERS/Leonhard Foeger

Dancers wait before the opening ceremony of the Opera Ball in Vienna, February 4, 2016. REUTERS/Leonhard Foeger

Dancers wait before the opening ceremony of the Opera Ball in Vienna, February 4, 2016. REUTERS/Leonhard Foeger

Dancers prepare before the opening ceremony of the Opera Ball in Vienna, February 4, 2016. REUTERS/Leonhard Foeger

Dancers wait before the opening ceremony of the Opera Ball in Vienna, February 4, 2016. REUTERS/Leonhard Foeger

Dancers wait before the opening ceremony of the Opera Ball in Vienna, February 4, 2016. REUTERS/Leonhard Foeger

Dancers wait before the opening ceremony of the Opera Ball in Vienna, February 4, 2016. REUTERS/Leonhard Foeger

Dancers wait before the opening ceremony of the Opera Ball in Vienna, February 4, 2016. REUTERS/Leonhard Foeger

Dancers wait before the opening ceremony of the Opera Ball in Vienna, February 4, 2016. REUTERS/Leonhard Foeger

Dancers wait before the opening ceremony of the Opera Ball in Vienna, February 4, 2016. REUTERS/Leonhard Foeger

German comedian Otto Waalkes, actor and director Michael "Bully" Herbig and moderator Elton (L-R) take part in the final German game show "Wetten Dass..?" (Bet it...?) in Nuremberg December 13, 2014. German TV show host Markus Lanz hosted the 215th and final episode of the show, which began in 1981 and became one of the most popular Saturday night programmes in Germany. REUTERS/Ralph Orlowski (GERMANY - Tags: ENTERTAINMENT PROFILE)

German comedian Otto Waalkes poses on the red carpet for the German premiere of the film "Men in Black III" in Berlin May 14, 2012. The movie directed by Barry Sonnenfeld opens in German cinemas on May 24. REUTERS/Tobias Schwarz (GERMANY - Tags: ENTERTAINMENT)

German comedian Otto Waalkes (C) attends the German premiere of the film "Men in Black III" in Berlin May 14, 2012. The movie opens in German cinemas on May 24. REUTERS/Tobias Schwarz (GERMANY - Tags: ENTERTAINMENT)

German comedian Otto Waalkes poses for photographer to promote his show in Berlin, March 30, 2009. Waalkes will perform during his show 'Otto-live in Berlin' in August 2009. REUTERS/Fabrizio Bensch (GERMANY ENTERTAINMENT)

German comedian Otto Waalkes poses for photographer to promote his show in Berlin, March 30, 2009. Waalkes will perform during his show 'Otto-live in Berlin' in August 2009. REUTERS/Fabrizio Bensch (GERMANY ENTERTAINMENT)

German comedian Otto Waalkes poses for photographer to promote his show in Berlin, March 30, 2009. Waalkes will perform during his show 'Otto-live in Berlin' in August 2009. REUTERS/Fabrizio Bensch (GERMANY ENTERTAINMENT)

Combination photo shows German comedians Helge Schneider as he straightened his hat (L) and Otto Waalkes as he straightened his cap (R) during the German television show "Wetten Dass..?" (Bet it..?) in Bremen, northern Germany, December 9, 2006. Picture taken December 9. REUTERS/Joerg Sarbach/Pool (GERMANY)

German comedian Otto Waalkes (R) and his partner German actress Eva Hassmann pose as they arrive for a television show celebrating the 50th anniversary of Germany's youth magazine BRAVO in Hamburg October 21, 2006. REUTERS/Christian Charisius (GERMANY)

German comedian Otto Waalkes (R) and his partner German actress Eva Hassmann pose at the red carpet as they arrive for a television show celebrating the 50th anniversary of Germany's youth magazine BRAVO in Hamburg October 21, 2006. REUTERS/Christian Charisius (GERMANY)

German comedian Otto Waalkes celebrates during a show match at the
Hamburg Masters Tennis tournament May 16, 2003. The match was organized
to promote the tournament. REUTERS/Fabrizio Bensch

FAB/WS

German comedian Otto Waalkes (L) returns a ball as German tennis star
Boris Becker looks on during a show match at the Hamburg Masters Tennis
tournament May 16, 2003. The match was organized to promote the
tournament. REUTERS/Fabrizio Bensch

FAB/WS

Former German tennis star Boris Becker jumps over the net during a show
match at the Hamburg Masters Tennis tournament May 16, 2003. The show
match was between Boris Becker, Argentine former tennis star Gabriela
Sabatina, Germany's Michael Stich and German comedian Otto Waalkes.
REUTERS/Fabrizio Bensch

FAB/WS

German entertainer Otto Waalkes performs during the Bundespresseball (federal press ball) in Berlin November 24, 2000. Around 2,500 guests attended the famous annual ball this year.

WR

German entertainer Otto Waalkes plays his guitar as he performs during the Bundespresseball (federal press ball) in Berlin November 24, 2000. Around 2,500 guests attended the famous annual ball this year.

WR

German entertainer Otto Waalkes performs during the Bundespresseball (federal press ball) in Berlin November 24, 2000. Around 2,500 guests attended the famous annual ball this year.

WR

Otto Waalkes, a German popular comedian talks to his new girlfriend Eva Hassmann during the German programme "Wetten Dass" (take a bet) in western German city of Duisburg March 25. Wetten Dass is one of the most popular Saturday night programmes in Germany.

PEM

German comedian Otto Waalkes (L) and co-actress Eva Hassmann arrive with producer Horst Wendlandt (R) for the world premier of Waalkes new movie " Otto - the catastrophy film " at a movie theater in Berlin, March 22.

Bayern Munich player Thomas Strunz (L) and his wife arrive for the world premiere of the new movie [starring German comedian Otto Waalkes - "Otto - the catastrophy film " ] at a movie theater in Berlin March 22.

German comedian Otto Waalkes (R) and co-actress Eva Hassmann (L) arrive for the world premier of Waalkes new movie " Otto - the catastrophy film " at a movie theater in Berlin, March 22.

German comedian Otto Waalkes arrives for the world premiere of his new movie "Otto - the catastrophy film" at a movie theatre in Berlin, March 22.

Bayern Munich player Thomas Strunz (L) and his wife arrive for the world premiere of the new movie starring German comedian Otto Waalkes - "Otto - the catastrophy film " at a movie theatere in Berlin March 22.

MUR

German comedian Otto Waalkes (L) and co-actress Eva Hassmann arrive with producer Horst Wendlandt (R) for the world premier of Waalkes new movie " Otto - the catastrophy film " at a movie theater in Berlin, March 22.

MUR

German comedian Otto Waalkes signs autographs as he arrives for the world premiere of his new movie "Otto - the catastrophy film " at a movie theatre in Berlin March 22.

MUR

German comedian Otto Waalkes arrives for the world premiere of his new movie "Otto - the catastrophy film" at a movie theatre in Berlin, March 22.

MUR

German actor Heino Ferch arrives for the world premiere of the new movie featuring German comedian Otto Waalkes - "Otto - the catastrophy film " at a movie theatre in Berlin, March 22.

MUR

German comedian Otto Waalkes (R) and co-actress Eva Hassmann (L) arrive for the world premier of Waalkes new movie " Otto - the catastrophy film " at a movie theater in Berlin, March 22.

MUR/ME

German comedian Otto Waalkes (L) and co-actress Eva Hassmann arrive with producer Horst Wendlandt (R) for the world premier of Waalkes new movie " Otto - the catastrophy film " at a movie theater in Berlin, March 22.

MUR/ME

German famous comedy star Otto Waalkes promotes his new movie "Otto" at the world biggest toy fair in Nuremberg, February 2. The fair starts tomorrow and lasts five days.

MAD/JDP

German comedian Otto Waalkes, model Verona Feldbusch and shomaster Thomas Gottschalk (L to R) share a joke during the German TV game show "Wetten, dass..." November 7. The popular show was broadcast from Linz in Austria's province of Upper Austria.

HP/WS

German comedian Otto Waalkes, model Verona Feldbusch and Formula One world champion Mika Hakkinen (L to R) have a chat during the German TV game show "Wetten, dass..." November 7. The popular show was broadcast from Linz in Austria's province of Upper Austria.

HP/WS

German comedian Otto Waalkes (L) jokes with model Verona Feldbusch during the German TV game show "Wetten, dass..." November 7. The popular show was broadcast from Linz in Austria's province of Upper Austria.

HP/WS