In an interview to promote his upcoming movie The Hangover 2, Galifianakis says that in real life he has at least one thing in common with his socially inept character Alan: he hates cursing.

"Alan doesn't curse. I don't like cursing in movies," he said. "I feel like cursing has become the new hackiness. You try to find substitutions for cursing. Anyone can say 'Oh, f--k,' but 'Oh my word!' is something that you would only hear your great aunt say."

Galifianakis says he likes "old-timey expressions. There's an innocence to it. Alan is very innocent and you want to keep that. He doesn't know how to curse. If he did it, it would only be to impress someone and go, "Isn't that cool?"

No doubt, Alan's raunchy sidekicks in the new movie will more than make up for Galifianakis' chaste tongue. The actor attests that crude antics and language in the follow-up Hangover could curdle your aunt's milk.

"It is so bad in parts that I told my mom she is not allowed to see it,'' Galifianakis told Entertainment Weekly. . "I forbid, forbade, forbid her from coming."

Hangover 2 opens nationwide this Thursday.