"The worst behavior, just off the top of my head," Kudrow answered when asked by a caller her worst guest star experience. "I rehearsed without makeup most of the week, and then on show night, I'm in hair and makeup, and was told 'Oh wow ... Now you're f**kable!'"
"That's bad behavior, I say," she added, revealing that she confided in a co-star after it happened. "I told Matt LeBlanc. He's a big brother."
Meanwhile, Kudrow also broke our hearts a bit during her appearance, when asked whether a Friends reunion was possible, a la the upcoming Will & Grace revival.
"I don't see it happening. It would be fun, but what would it be about?" she asked. "The thing we liked best about the show was that they were 20-somethings and they were their own family. Now, they all have families, so what are we going to watch?"