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.
"That's how you pass, trigonometry, sell crack to your teacher, use niggernometry" - Afroman, Bacc To School
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.