The folks over at The Frisky have been keeping track of celebrities who are supposedly bad in bed: "We were shocked to find out last week that, at least according to Natalie Wood, Elvis was terrible in bed. And that Adam Levine of Maroon 5 says tennis star Maria Sharapova was the worst sex of his life."
They've put together a (sometimes) shocking list of 10 celebs who don't quite measure up in the bedroom. Here's a sneak peek ...
1) Brody Jenner -- Kristin Cavallari is none too impressed with his skills, calling him "vanilla."
2) 50 Cent -- An exotic dancer rates him: "On a scale of 1 to 10, I’d give him a 3."
3) Colin Farrell -- Woody Allen's former au pair says, "If I didn’t know better, I could almost have thought it was his first time."
For the full list, head over to The Frisky.