Who Is The Friends Guest Star Jennifer Aniston Called Out For Bad On-Set Behavior?

Throughout its 10 seasons, "Friends" hosted many iconic guest stars. From Bruce Willis to Brad Pitt, these actors brought their A-game to the small screen, creating moments that fans still quote today.

However, Jennifer Aniston revealed that not all of the actors who guest starred on the sitcom were pleasant. Though she never said who it was, the actor noted how the mystery person later showed remorse. Aniston said in June 2021 on The Howard Stern Show (via People): "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.'"

Of course, Stern pushed to know who it was, prompting Aniston to joke "Tom Selleck." However, Selleck — who played Monica's once boyfriend Dr. Richard Burke — was not the real culprit. So, who was it? And just how bad did they behave?

Despite not naming who the rude guest star was, Jennifer Aniston gave a few stray details about how the actor behaved onset. Apparently, they behaved as if the television series was beneath them and refused to cooperate onset. As a result, she was unimpressed with what she felt like was someone disrespecting not only her work, but everyone on "Friends."

"It was as if they were just too 'above' this, to be on a sitcom," she explained to Howard Stern (via People). "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 then added: "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.'"

Though it remains unconfirmed who Jennifer Aniston was talking about, one actor notably apologized for how he acted on the show. Fisher Stevens played Phoebe's psychologist boyfriend who antagonizes the group through psychoanalysis. He only appeared in a single episode, but the actor said knew he left a bad impression. "At that moment in my career, I had never done a sitcom before," Stevens told PeopleTV's "Couch Surfing" in 2021. "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."

"I was kind of an a**hole, I have to admit," the actor continued, revealing he had issues with his lines being rewritten. "'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.'"

While this doesn't answer the question of whether Stevens is the actor who offended Aniston, all signs seemingly point to yes.