Jennifer Aniston apparently did not like a male guest star who appeared on ‘Friends’ several years ago. Appearing on ‘The Howard Stern Show’ on SiriusXM Wednesday, June 23, Aniston revealed that this particular male actor had an "attitude" while on set.

"The funny thing is, that male did apologize about their behavior years later, and just said, 'I was so nervous, to be honest, that I wasn't on my best behavior,'" said Aniston who joined ‘Friends’ co-stars Lisa Kudrow and Courteney Cox virtually for the radio show .

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"It was as if they were just too 'above' this, to be on a sitcom. And I remember when we were doing a network run-through, the network and the producers would just laugh. And this person would be like, 'Listen to them, just laughing at their own jokes. So stupid, not even funny’,” Aniston said.

"It was just like, 'What are you doing here? Your attitude, this is not what we're all about. This is a wonderful, warm place to be, and you're coming into our home and just s***ing on it.'"

Host Howard Stern asked if the mystery actor was Tom Selleck, who had a recurring role as Dr Richard Burke on the show. "It was Tom," Aniston said jokingly. "You just don't know how cruel and unusual he is... Tom has an angel's halo over his head, it's just a permanent halo over Tom's head."

But online, many wondered if it was a different actor. Several people on Twitter speculated it was Fisher Stevens. The 57-year-old actor, director, producer, and writer, best known for his portrayals of Ben Jabituya in ‘Short Circuit’, played the role of Roger, Phoebe's (Kudrow) psychiatrist boyfriend, who in the episode ‘The One with the Boobies’ was annoying to all the characters.

Funnily enough, whether or not Aniston was referring to him, Stevens has already spoken about behaving rudely with the ‘Friends’ cast. He has even apologized for it. Back in February, Stevens said that he acted like a real "a**hole" while filming his episode.

Appearing on PeopleTV's ‘Couch Surfing’, Stevens said, "At that moment in my career, I had never done a sitcom before. I had never heard of ‘Friends’ because it was just the beginning of the show and I didn't watch TV at the time much."

After he learned his lines from the script and flew to Los Angeles to film the episode, he quickly discovered when he got to set that the entire script had already been rewritten. "Because that's what sitcoms did. And I didn't know that," he said. 

He added, "I was kind of an a**hole, I have to admit. 'What do you mean? So I have to relearn lines that you've written that are worse than what you'd originally written?' Yeah, I was a d***. I've rarely seen any of those people on ‘Friends’ again, but I'm sure if you asked them about me, they would go, 'What a New York snob'."

Stevens addressed Kudrow, Aniston, Cox, Matt LeBlanc, Matthew Perry, and David Schwimmer and said, "Yeah, I'm sorry guys. I'm sorry I was a d*** to you all. I apologize. I was bad, I was wrong."