Either Improv Everywhere is doing their Movies in Real Life treatment for Fight Club or a movie theater in Florida has got some explaining to do.
It seems that some very non-Disney material got slipped in before a screening of Frozen over the weekend. Very non-Disney in the sexual explicit kind of way.
Just a note: don't look up Fight Club Porno Scene on Google Images with the safe search off unless you are fully prepared. You've been warned.