Apparently, Jennifer Aniston could not stop HAHA-ing at co-star Katherine Hahn!
Especially during her monologue in We're The Millers where Katherine's character talks about her "shallow vagina." Nothing like some vaginal HIGHlarity!
In a recent interview, the Horrible Bosses star was asked if there was a particular scene in We're The Millers where she had a horrible time trying to keep a straight face. Here's what Jen said: