https://www.yahoo.com/celebrity/lisa-kudrow-reveals-friends-guest-162749129.html

Friends saw plenty of guest stars over its 10 seasons, but as Lisa Kudrow (https://www.yahoo.com/tv/friends-star-lisa-kudrow-literally-203738812.html) revealed Wednesday on Watch What Happens Live, only one sticks out in her mind as a particularly sour scene-stealer. “The worst behavior (https://www.yahoo.com/style/lisa-kudrow-just-revealed-very-165401201.html), off the top of my head?” she asked, after a fan called in to ask Kudrow what the worst behavior she’d seen from a guest star had been. Fellow guest Jennifer Beals asked Kudrow, who starred on the hit NBC comedy as Phoebe, if she retaliated after the insulting comment was made.

http://www.agcwebpages.com/BLINDITEMS/2017/MARCH.html

29. LISA KUDROW ("WATCH WHAT HAPPENS LIVE") 03/03/17 (https://goo.gl/28QCHr)
Lisa Kudrow has dished on some hot "Friends" gossip while making the rounds promoting her new film, "Table 19." On last night’s episode of "Watch What Happens Live with Andy Cohen," a fan called in to ask the actress about the worst behavior she’d experienced from a guest star on the hit sitcom. "The worst behavior just off the top of my head?" Kudrow replied. "I rehearsed without makeup most of the week and then on show night I’m in hair and makeup and I was told, ‘Oh, wow, now you’re’ — can I say it? ? ‘now you’re f**kable.’" "That’s bad behavior, I say," she told host Cohen and fellow guest Jennifer Beals. When Beals asked if Kudrow retaliated, the actress said she told Matt LeBlanc about the comment because "he’s like a big brother." Unfortunately, the Phoebe Buffay actress didn’t name any names, leaving us to ponder the possible suspects. She did, however, later reveal that it was not Charlie Sheen, so you can cross him off the list. Michael Rapaport; Sean Penn; Alec Baldwin