Paul Rudd didn't know how to live with himself when he accidentally flashed an audience.
During an appearance on Tuesday's The Late Show with Stephen Colbert, the Living With Yourself star shared a story of the time he did an accidental nude scene on stage with Rachel Weisz.
As the Friends alum responded, "One time, I was in a play. I know it doesn't count as a play. It was unintentional."
"I was laying down on a bed, and I was doing a scene with the lovely actress Rachel Weisz," he continued. "We were laying in bed and I was wearing boxer shorts, and all of a sudden, the audience started chuckling and I didn't know why. And I realized it was 'cause I had my leg up and I was totally hanging brain." Uh...oops.
Having already talked about books in airport displays that he just can't stand to see, the star then explained, "Hanging brain—for those of you who are thinking about writing a book to go on display at the airport. Hanging brain is not so much the penis hanging out, but more of the testicles."
The more you know!
Cracking up, Colbert said back, "That's the brain part?" To which the Clueless star confirmed, "That's the brain."
Well, count that as an awkward moment for Weisz and that audience!
Now, check your fly and watch the rest of the interview to find out why books in airport displays make Rudd so furious.