Bruce Springsteen sings about rivers and chicks named Mary.  James Hetfield sings about fuel and fire.  Rob Zombie sings about necrophilia and robots.  They sing about these things because it is what they know.  If you were Iggy Pop, what would you write about?  Aging gracefully?  No, probably not.  If I was Iggy, I would clearly write about my Iggy Cock (see what I did there?).

"You write about things of importance to you," he tells Rolling Stone magazine.

"And it's gotta be for real. Do I think about my d—k? All the time. I got a right to [think to] sing about it. If I thought, 'It's time to write a rock song, I'd better mention my d—k,' then I wouldn't even be able to say 'd—k' right. But it's nature-oriented."

For your viewing pleasure, video footage that proves Iggy Pop didn't always look like a deformed descendant of Napoleon who fell asleep at Hollywood Tans.