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.

noun. A woman who is talented at oral sex.

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.

a ladsy lad, whose only goal is to become the ultimate lad, uni, authority and unladsy chooks will not get in his way. A rooster is contempt with his sexuality and is willing to do anything of the sexual or ladsy nature to become a roosteroo, and will avoid anything unladsy in nature which may dampen his chances of success

It's a great song by Alice in Chains, talking about the cruel war of Vietnam

A girl who is quite promiscuous, that is sleeps around a lot. Originated from the fact that for this girl, 'any cock will do'

of course, cock being not the chicken kind, but the male genitals.

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.