- What the hell are you gonna jerk off to? – Nothing.
I guess I’m not gonna jerk off.
Yeah, you’re you’re not gonna jerk off.
All right, where are the cameras? [CHUCKLES.]
Am I on Jerk’d? [LAUGHS.]
- Where’s Mark McGrath? – Hey, I’m serious.
Strangely, I can’t find a good dictionary definition for “on” with the meaning “to be on a television program”.
All right, where are the cameras? Am I on Jerk’d?
The character is alluding to a TV show called “Jerk’d”, which probably doesn’t exist. This is most likely a reference to “Punk’d”, as userr2684291 says. It’s common for people who realise they’re on a hidden camera show to ask “Where is the camera? Is that a camera? Am I being filmed? Am I on TV-Show-X?”, etc.