He Raps... He Dances... He produces offspring. And now he throws his hat in the acting ring. I wish I had money.

Kevin Federline, who made his nationally televised rap debut last Sunday at the Teen Choice Awards, is going for another first – his debut as a TV actor on America's top-rated drama, CSI: Crime Scene Investigation, PEOPLE has learned exclusively.

As Federline tells PEOPLE while on the set of the CBS show, "This is pretty much my first time acting. It's the first time I've actually had a speaking role." He adds that the offer came about quickly. "I was doing stuff for the Teen Choice Awards," he says, "and got the call while we were rehearsing and I pissed in my pants! I was excited right off the bat. It's the only show that I really, really watch."

Federline, 28, started shooting his part in Los Angeles on Thursday night. He will play a menacing, arrogant teen who harasses investigators Nick Stokes (George Eads) and Warrick Brown (Gary Dourdan) on a job. The episode is tentatively scheduled to air in October.

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