How could she do this?! Lady Gaga asked Matt LeBlanc to chose between two Friends characters during an appearance on The Late Late Show with James Corden on Tuesday, October 25 — and his surprise response earned plenty of cheers from the audience, as seen in the clip above.

The "A-YO" singer, 30, who was sitting in as a special guest in James Corden's band, interjected the Man With a Plan actor's interview to ask, "Matt, who'd you rather: Monica or Rachel?" (Monica and Rachel, of course, being the characters Courteney Cox and Jennifer Aniston, respectively, played on Friends.)

After some hesitation, LeBlanc, 49, responded, "I would have me some Phoebe. She's very bendy." As fans may remember, Phoebe (Lisa Kudrow) famously said she was "very bendy" on the NBC comedy's season 5 episode "The One Where Everybody Finds Out."

"Matt, that is correct," Gaga smiled and replied.

The "Perfect Illusion" entertainer was an unofficial cohost on Tuesday night's episode of The Late Late Show. At the start of the show, she crashed Corden's opening monologue and poked fun at Republican presidential candidate Donald Trump's supporters.

"Donald Trump is launching a nightly news show on Facebook, which will stream Trump's rallies," she told the crowd. "It'll be kind of like airing my concerts, except instead of Little Monsters, there's actual monsters."

Later in the show, Gaga starred in the beloved Carpool Karaoke segment, where she belted some of her biggest hits, as well as new songs from her recently released fifth album, Joanne. Relive the showstopping moment in the video below!

The Late Late Show With James Corden airs on CBS weeknights at 12:37 a.m. ET.

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