Noise made by niggers, especially raucous, larger groups observed to be whooping, hollering, and in general having little consideration for those nearby.
Kris(Sleeping): Niggercow
Jordan: What?
Kris(Sleeping): Niggercow
Jordan: Yo Kris, wake up.
Kris: What?
Jordan: You just said niggercow in your sleep.
Matt(Sleeping): Yumm, what a big penis you have.
Theory coined by the prophet Afroman which claims to be the one, true method for selling crack to one's teacher. A close relative of trigonometry, but the similarities end at the rhyme unfortunately for us students.
You see some of these white fools climbing mountians, exploring lava tubes etc, you wont see a nigga do'n that shit, so you wont see em buying all that equipment, its niggernomics.