Penn Badgley recently spoke to OK! about what really goes on between takes on the set of Gossip Girl. You know, little things like Chace Crawford’s dancing skills, the occasional diaper-changing and, oh yeah, threesomes!

At the Hennessy Artistry Series Finale Wednesday, Penn wouldn’t say who is in the Gossip Girl threesome, but he did dish on other series deets ...

Q: How do you keep busy between takes?

Penn Badgley: “Threesomes! [laughs] That’s an interesting question. Mostly we just hang out with the crew.”

Q: Matthew Settle, who's expecting her first child, has said he’s going to have the cast change diapers on the set. Has he gotten around to that yet?

Penn Badgley: “He hasn’t told me, but I don’t doubt that."

"He’s a bundle of laughs and many other things. I imagine that’s true. He’ll probably bring his baby on set, and have us do that for him.”

Penn Badgley (Dan Humphrey) is always good for a sound bite.

Q: How are Chace Crawford’s dancing skills?

Penn Badgley: “I haven’t seen them. He was going to show them to Blake [Lively] at one point, but that never happened. He’s probably getting very good.”

Q: Seen him dancing in the background?

Penn Badgley: “You know what I saw him do one time? He did a little bit of a move coming across ... the Usher foot slide. And I didn’t realize what he was doing, and then I realized ‘oh, he’s training right now.’ It was over quickly."

"It was very brief. He thought nobody was watching.”

Steve Marsi is the Managing Editor of TV Fanatic. Follow him on Google+ or email him here.