package checker
A male (regardless of sexual orientation) who is obsessed with looking at the genitals of other men in the locker room in order to compare his endowment with theirs.
Hombre 1: Dude, what's up with that guy who was staring at my unit?
Hombre 2: Don't worry about it man, 24 Hour Fitness is full of package checkers.
Hombre 2: Don't worry about it man, 24 Hour Fitness is full of package checkers.