Riel_Canadian:

"Canadian Prime Minister Locks Himself In Brazilian Bathroom Until He Gets His Way
 Business Insider
Ricky Kreitner 
 Aug. 9, 2011, 6:01 PM 	142,532
On a visit to Brazil yesterday, Canadian Prime Minister Stephen Harper locked himself in one of the foreign minister's bathrooms, protesting the Brazilian president's decision that toasts and speeches take place after her lunch with Harper, and not during the lunch, as Harper wanted. The prime minister refused to leave the bathroom until the Brazilian president gave in to his demands, the Washington Post reports."


Se also:
http://www.cbc.ca/newsblogs/politics/inside-politics-blog/2011/08/pmo-denies-brazilian-bathroom-holdout.html
and, in Protugeuse: