Hahahaha. No, I get that. A bunch of dudes in a bar sining old college war songs. That's real. I can also enjoy a movie that features "Street Performers" because they are real.

The ones that bug me are when a character is telling his toddler son about their money troubles and he breaks out into a woeful sorrow number. Or when Tom is telling his buddies how much he digs a girl and they all start singing and snapping their fingers in celebration.