The worse/funniest thing any of my players have done was back in '78 when the group's paladin suddenly asked where his squire was. Well, it turned out that during the last game, when the party's wizard and I were passing all those notes back and forth, he (the squire) was drugged (by the chaotic neutral wizard) and sacrificed.
Sure tought the paladin to pay more attention to his followers (after he 'avenged' his poor squire by killing said wizard of course.
