A greasy nigga is black nigga covered in chicken grease and watermelon juice trying to jack a car but his hands are to greasy. the older that nigga gets the greasier he gets
John: Oh no that GREASYNIGGA is trying to jack my car
Carl: Don't worry he is too greasy
John: Lol
You've had anal sex and end up with a lot of shit on your penis, you have had a greasynight.
Brain: I heard you had a one night stand last night.
Chad: Yeah, but she was a proper minger, ended up having a greasy night!
Brain: That's fucking gross!