Rapper Ludacris was a happy teenager after discovering he had a larger-than-average penis. The Crash star is famed for lyrics about his manhood and insists he can't help singing about it, because it's one of his most famous features. He boasts to Playboy magazine, "If you're proud of yourself, you've broken out a ruler and measured yourself. All I can say is I'm extremely proud of myself. "It took me a while because it's not like I go around peeping at other men. It's something I've been told by many women. "I'm exceptional - very much, I was told. Women, watch out for us medium-built guys."