Lesson of the day: Don't mess with Cameron Diaz's besties.
Diaz cut an interview short on KIIS 106.5's "Kyle & Jackie O" show after Kyle Sandilands made a jab about her friend Drew Barrymore's past substance abuse. Diaz and Jason Segel were on the phone with the Australian radio hosts to promote their new movie, "Sex Tape," when Jackie O mentioned that Giselle Eisenberg, the child star who plays their daughter in the movie, reminded her of Barrymore in 1982's "E.T."
"Aw, yeah!" Diaz said. "She does, now that you mention it. And she's as bright and lively as Drew is, as well. She's a sweet little girl."
"Let's hope she misses out on the Drew Barrymore drug years, because those were a great thing to watch, but not so good to be in, I'd imagine," Sandilands said.
Diaz was not impressed: "I'm sure, Kyle, you've never been through a drug phase, have you? Or alcoholism or anything like that? Pretty clean; always did it right? Congratulations."
The radio host then attempted to talk about the 41-year-old's rumored new boyfriend, Benji Madden, who has appeared on "Australian Idol" and "The Voice Australia." After an awkward pause, Jackie O tried to turn the conversation toward Segel's weight loss, but Diaz was over it.
"We're having to go now," she said. "Sorry, they're wrapping us up."
After the two hung up, Jackie O admitted things went awry.
"Well, that started very well and ended poorly, I think. Good one, Kyle. You ruined that interview. Sorry to be blunt. You brought up Drew Barrymore, her best friend's drug addiction in the past ... She's her best friend. And then you brought up Benji. We all know how protective Cameron is about her private life."
Sandilands brushed it off, saying: "Maybe they should've just bought ads if they wanted to sell the movie."