Sometimes celebrities just can't believe they're banging other celebrities, and they need to let the world know. Other times, the relationship ends badly, and celebs talk about the sex as a form of revenge.
Meanwhile, we're all listening intently, because, let's face it, we're morbidly curious about how big Eminem's penis is and what weapon of mass destruction Jessica Simpson can be compared to. Here are some celebs that love to kiss and tell.
Kim Mathers: Kim said of her ex, Eminem: "He’s not very well endowed…. If you’re going to have sex with Marshall, make sure you have a little blue pill, because otherwise it does not work.” Ouch. The only question now is…does it really feel that empty without him?
Nick Carter: Carter dated Paris Hilton in 2004, and after the split, he said a lot of things. One of them being: “She was a drunken prude who as far as I can see did not really like sex. She relied on drugs and drinks to give her confidence in the bedroom and was more often than not too wasted to even perform. I lost count of the nights I had to pick her off the floor and drag her to bed passed out.”
Overall, it looks like Paris has mixed reviews. Joe Francis said: "Paris is the best ... Paris is amazing in bed ... better than anyone.”
David Arquette: In October 2010, Arquette told Howard Stern that he and Cox "have not had sex in ... it's been four months or so. She's an emotional being, an amazing woman. If it doesn't feel right then she doesn't feel like bonding in that way."
Doofus. You want your wife to get back with you? Ya don't talk about your sex life! Then again, Howard Stern could've gotten Mother Theresa to kiss and tell.
Kristen Cavallari: Kristen said of Brody Jenner: "It was very vanilla." No matter how much you like vanilla, comparing it to your sexual performance is never a compliment.
John Mayer: Everyone's favorite douchebag famously gave rave reviews to Jessica Simpson's bedroom performance:
"Sexually it was crazy. It was like napalm, sexual napalm. Did you ever say, 'I want to quit my life and just f-cking snort you? If you charged me $10,000 to f-ck you, I would start selling all my sh-t just to keep f-cking you."
Despite the massive compliment, Jessica wasn't happy. "I'm a little bit angry," she said. John apologized later, calling himself an "assh-le."
Shia LaBeouf: Shia LaBeouf basically outed Megan Fox for hooking up with him while they were filming Transformers. And speaking of Transformers, when did Shia LaBeouf transform from the nice kid in Even Stevens to a massive DB?
"Look, you're on the set for six months, with someone who's rooting to be attracted to you, and you're rooting to be attracted to them. I never understood the separation of work and life in that situation. But the time I spent with Megan was our own thing, and I think you can see the chemistry onscreen," LaBeouf said.
Wilmer Valderrama: Oh, Wilmer. If you have sex with this guy, you can guarantee, the world will know about it. Wilmer claimed he took Mandy Moore's virginity and said sex with Jennifer Love Hewitt "was an eight." He said that Lindsay Lohan was one of the best women he's slept with, and revealed that Ashlee Simpson was "loud" in bed. Any others you want to add to that list, Wilmer?