I do not think that prank was funny at ALL. What a cruel thing to do with someone oh my gosh.
I have a friend who was in Israel and about to get engaged. Her family flew in, his family was there already, everything was planned. The night before he was planning to propose, they were taking a walk and he mentioned very non chalantly that he hopes she plans to lose weight during their marriage. I guess she thought about this all night, and the next day when he asked her she said no!!!