UH-OH! JOHN BLABS ABOUT HIS SEX LIFE AGAIN!

The man who once described Jessica Simpson as "sexual napalm" and shared details about his relationships with other celebrity exes suchs as Jennifer Love Hewitt, Jennifer Aniston, Taylor Swift and Katy Perry is at it again. "[I have] a little bit of a deeper understanding about what it's like to be a woman in that yes, I could have sex with somebody at any given moment," John Mayer says proudly in a new interview. Then he notes that he's slept with "less than 500" people. (Let us guess, John: 499?) One that got away? "I walked into an Oscar party like two years ago, I looked over at Scarlett Johannson, and for the first time in my life I said to myself, 'She wants nothing to do with you,' "the singer, 41, admits. Way to dodge a outlet, Scar Jo!