A brother and sister in the cong had invited me to theirs for dinner and they had rented a couple movies, one of which was School of rock. And I can't remember exactly wich bit but she had apparently already seen the movie and fast forward a "rude" bit. Now this movie is a PG so I never saw that coming, and it was a few years later I watched the film and I think all it was because jack black uttered a minor swear word!!
Also I knew a sister who wouldn't let her kid watch shrek because it had a fire breathing dragon on it!
And then when my dad went to the cinema to see Hannible, he told me not to tell anyone! Seriously wtf!