Gwyneth Paltrow has quite a potty mouth.
Host Chelsea Handler got the ball rolling when she discovered that they both call their grandmothers "Mutti" (the German word for "Mommy"). "My Mutti was a real bitch," Handler, 36, quipped.
Without missing a a beat, Paltrow replied: "My Mutti was a real c**t!"
"She just hated my guts, basically," Paltrow explained. "She tried to poison my mother against me, but it didn't work because I have a great mother [Blythe Danner, 68]. She was just tough."
Fortunately, Danner is a much nicer grandmother to Paltrow's two children, Apple, 6, and Moses, 5.
"She was adamant that she did not want to be called grandma. And who can blame her? My mom's hot and she didn't want to be called grandma," Paltrow laughed. "She decided she was going to be called 'Woof.' So she kept trying to make the 'Woof' thing stick. It's even her email address!"
"Apple just wasn't having it and one day she was just like, 'Lalo!' And that was it," Paltrow said. "She's Lalo."
Sign up now for the Us Weekly newsletter to get breaking celebrity news, hot pics and more delivered straight to your inbox!