John MayerJohn Mayer gets candid in the new issue of Rolling Stone. The singer-guitarist opens up about his life, and nothing is off limits.

In the interview, Mayer discusses masturbation, and why he thinks it would have helped Tiger Woods.

"If Tiger Woods only knew when to j--- off. It has a true market value, like gold bullion," he says.

He also talks about the women in his life -- Jessica Simpson, Jennifer Aniston and the girl who inspired 'Your Body Is a Wonderland.' (And it wasn't Jennifer Love Hewitt.)