The expression “sex, drugs, and rock and roll” was popularized by new wave artist Ian Dury in 1977, when he released a song with a similar name. Since then, the three vices have been tightly linked and become synonymous with the excesses of the music industry.

Now we expect our rock stars to behave outrageously, especially when they're on stage. As a paying member of the audience, we expect to be reimbursed with a wild spectacle and hopefully, if it's not too much trouble, a little bit of extra "titillation."

Because dammit, we really love sex. And we love it involves a famous person.

But sometimes musicians can get into hot water for crossing the threshold that separates sexual suggestion from full-on indecency. It's one thing to flaunt your sexuality, it's quite another to whip it out and hold it in your hand.

These musicians didn't get the memo about keeping it in their pants while out in public. Or they thought they could get away with a little indecent exposure as long as the light show was up to par. Either way, their naughty bits got them into all kinds of trouble.