Rocker Pete Wentz was a late developer and needed help with the female anatomy when he first hooked up with a girl in high school. The dad-to-be Fall Out Boy star reveals his first sexual experience was a flop because he had no idea where to direct his attention.

Wentz tells Elle magazine, "I wasn't sure where a girl's genitalia sat, compared to a male's. I wish I'd had a GPS (satellite tracking device) in high school because I had no clue where I was going. I guess on a man it feels like it's closer to the belly button. On a girl, it's further down. I'll be honest, I was a super-late bloomer, and I was kind of a prude."

And the 29-year-old, who married pop star Ashlee Simpson this year, insists he is the very opposite of a promiscuous rocker: "I've always wanted to be able to keep the number of people I've had sex with very low, because I never wanted to have to tell my future wife, 'Oh, yeah, I was with 30 people.'"

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(This news article provided by World Entertainment News Network)