Heidi from Limburg, Belgium, prepares a joint in the Toermalijn coffee shop in Tilburg April 29, 2012. Tourists puffed on spliffs in the streets of southern Dutch cities and defiant coffee-shops sold joints to visitors in protest against a ban on selling cannabis to foreigners which took effect on May 1. Picture taken April 29, 2012. REUTERS/Michael Kooren (NETHERLANDS - Tags: POLITICS SOCIETY BUSINESS DRUGS TRAVEL)