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.
After an altercation with a photographer, Nicole went to drown her sorrows in the Viper Room, where LA art-pop band The Spores were playing. Sadly for Nicole, the band spotted her diving into a booth and used their trademark on-stage puppets to take the piss out of her inability to afford food, culminating in one of the puppets saying, "I screwed Nicole Ritchie... and wrapped my whole dick around her waist." Nicole stormed out telling doormen that she was going to sue.