“They shall never know of it,” the actor jokes.

“I’ll just deny it.”

And that’s not quite an accident.

THE HANGOVER

Zach Galifianakis in ‘The Hangover’.Everett Collection

“My kids think I’m a librarian somewhere.

They don’t even know,” Galifianakis said.

“They think I’m an assistant librarian somewhere.”

“They shall never know of it,” Galifianakis joked about the raunchy 2009 hit.

“I’ll just deny it.

I’ll say, ‘I don’t know what you’re talking about.

I had nothing to do with that movie.'”

“You [want to] protect their innocence as much as possible.

They’re just children.