The 53-year-old starred in the show throughout its ten year run.
Lisa played massage therapist Phoebe Buffay alongside Jennifer Anniston, Courtney Cox, David Schwimmer, Matthew Perry and Matt Le Blanc.
The hugely popular comedy ended in 2004 but 13 years after the finale, Lisa has revealed an awful comment made to her by a guest star.
The star made the revelation on US chat show Watch What Happens Live.
Lisa Kudrow revealed the awful comment a Friends star made to her while appearing on Watch What Happens Live [Bravo]
Lisa Kudrow played Phoebe Buffay on the hit comedy throughout its 10 year run [Getty]
Lisa was appearing as a guest when a fan called in to ask which guest star had the worst behaviour on the show.
She replied: “The worst behaviour, off the top of my head?
“I rehearsed without make-up most of the week, and then on show night, I’m in hair and make-up, and I was told, ‘Oh wow, now you’re…”
She then paused to check she could say the expletive, before continuing: “Now you’re f**kable.”
Host Andy Cohen looked visibly shocked at Lisa’s confession.
“That’s bad behaviour, I say,” she added.
Though she refused to name the offending star, Lisa did confirm that it was not Charlie Sheen [WIRE]
Lisa then revealed that she told her co-star Matt LeBlanc about the incident, saying he acted as a “big brother” to her.
Refusing to give the name of the star who made the comment, Lisa did confirm that it wasn’t Charlie Sheen.
The troubled actor starred opposite Lisa when he played her love interest in the episode The One with the Chicken Pox.
Lisa also spoked about a possible Friends reunion, saying she’s not sure if it’s a good idea.
“It would be fun, but what would it be about?” she questioned.
She continued: “Think about it. The thing we liked best about the show was that they were 20-somethings and they were their own family.
Lisa Kudrow also played down speculation of a Friends reunion, saying she doesn’t think it’s a good idea [NBC]
“Now, they all have families, so what are we going to watch?”
The friends cast were last seen together in 2016 at a tribute to legendary sitcom director, James Burrows.
During their segment on stage, the cast spoke about the bond they developed while on set.
Jennifer revealed: “At the beginning it was not a hard thing, we really just wanted to hang out with each other.
The Friends cast were last reunited at a tribute to director James Burrows [Getty]
“It was not ‘Ugh we have to do this.’
“We just really fell in love and adored each other instantly and would hang out at each others houses and watch the show together.”