package peaker
A guy that checks out another guy's package (dick and balls) to see how they stack up against his own. Package peaking most commonly takes place in gym locker rooms and public restrooms.
Duder 1: "What the fuck? Did you just look at my dick man?"
Duder 2: "No way, I ain't a package peaker dude."
Duder 1: "Yes you did! After I finish shaking my dick off, I'm gonna kick your ass."
Duder 2: "No way, I ain't a package peaker dude."
Duder 1: "Yes you did! After I finish shaking my dick off, I'm gonna kick your ass."