During an appearance on The Howard Stern Show, along with Friends costars Courteney Cox and Lisa Kudrow, Aniston spilled the tea about a guest actor who didn’t seem too interested in being on-set in the first place.

“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,’” Jennifer said, per People. “It was as if they were just too ‘above’ this, to be on a sitcom.”

“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 continued.

“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 shitting on it.’”

In case your mind is running wild with guesses of who it could possibly be, don’t worry—it wasn’t Dr. Richard Burke! Tom Selleck was a total angel. 

“You just don’t know how cruel and unusual he is,” Aniston joked before saying, “Tom has an angel’s halo over his head—it’s just a permanent halo over Tom’s head.”

Sounds like we may never know who this mystery male actor was. Womp womp!