Man1: Yo, i went out with this girl last night and i think she gave me the cock-roaches.
Man2: You know, once you get the cockroach thing, its impossible to get all of them without shaving.
It's a game, a large group of people play in an even larger group. Like a club in a school would play it, amongst the rest of the unknowing students. Basically, if someone comes up to you and whispers cockroach in your ear, you have to get down on your backwithout hesitation, no matter where you are and wave your arms and legs in the air for five seconds, if you delay at all, or change position you have to do it for 20 seconds.
Guy1:*whispers* cockroach!
Guy2:NO! hell no!
Guy1: TWENTY SECONDS!
guy2: *forced into doing it for 20seconds*