Charlize Theron teaches Chelsea Handler to play drunk

Charlize Theron, star of "Young Adult," stopped by "Chelsea Lately" last night and had a few words of advice for host Chelsea Handler. Sure, she talked about her favorite charity and her film, but the really important moment? Teaching Handler how to "act drunk."

Handler said that to act drunk, you maybe need to down a bit of booze, but Theron had a different idea. She actually went out and got sloshed to see how one would pretend to do the same thing and said the only thing you're thinking about when you're wasted is pretending you're not.

We got a little demonstration, and if our own research is anything to go by, she's totally right. Check out the video of her appearance on "Chelsea Lately" and watch her demonstrate her "I'm so totally ... hiccup ... sober" performance in "Young Adult" in theaters now.