name givin to machine gunners in vietnam. because the sound of a machine gun would usually wake everyone up in the morning. in an ambush or blocking position the machine gunner was always supposed to fire first.

also machine gunners where called this because they sometimes fought out of fortified positions like nests. hence rooster nest.

Also known as Cock, a Rooster is an exterier organ of the male

To rooster means to play your music very loudly while driving with your windows down. Much like a rooster crowing loudly to everyone around. Also common to do this early in the morning to act as a rooster and wake others up.

1 The stupid fucking cunt of a bird that crows next to the door every fucking morning.
2 the stupid bird that attacks you for no reason and squawks at any fucking thing it does'nt like.

Someone who is an absolute plug, lazy, annoying, or who chirps excessively. They try to act tough but they are really just an aspiring girl scout.

(Slang): A pimp.