Negrotism is a type of "blackness" or invisible "black matter" that radiates off of someone with a high level of Negrosity. This is often seen when someone smokes weed or a combination of other drugs (such as a Jeffrey). Negrotism may be radiated from a subject whether they are of black decent or not, as long as the Negrosity levels are high enough. Negrotism can sometime be absorbed from an outside source such as another subject radiating Negrotism. Negrotism can be more easily absorbed if the subject consumes more cornbread, grape drink, fried chicken, corn, and even mashed potatoes to an extent.
Natesmoked so much of that really ballin' weed that he started to radiate Negrotism.
verb: (internet) To revive a long dormant forum thread by adding a new post, thus bringing it to the top of the forum list. Often a tactic of trolls attempting to control a forum
"That troll keeps necrobumping old threads so everyone will be too distracted to read the new important ones."