There is a lot of rubbish written about toilet humour - people saying it is childish and pretending it is beneath them - but there is no doubting the effectiveness of a really good willy gag.
“I really unfortunately don't have tons of hilarious Sundance stories, because really I am not the biggest fan of hanging out, but the reason why is because I never go see other people's movies and I think that's the way to do it.”