An African-American individual that has no social disciplines nor has the competence to realize their faults. These individuals have a tendency to spread their ignorance through the excessive usage of the slang term 'nigga' and usually dress in a 'ghetto' fashion.
They also may randomly take off their shirts and scare all females in a 5 block radius away from them.
Herp: Yeah man, I didn't want to go to the party, there were way too many Nigmiesters there.
Derp: Definitely, I hate Nigmiesters.. they can be such downers bro.
Herp: Yeah, a group of them came to my friend's party last week in toyotas and drank all our Bacardi and Brewskis.