This weekend, R-rated teacher comedy "Fist Fight" hits theaters, begging a bigger question: Are you laughing too hard to notice the little mistakes Hollywood makes every time they release a comedy?

Hilarious comedies like "Groundhog Day" and "Anchorman" can easily brush off errors — mostly because we’re too busy laughing to notice them. Check out these "oops" moments from some of the funniest movies ever made.

As always, all photos courtesy of MovieMistakes.com.