Verb: Refers to the act of ditching your friends in order to suck dick and/or score drugs, generally used to describe the actions of another not ones self.
1: "Why haven't you heard back from her?"
2: "She must be off doing a Nicki..."
The sexual act where a dudebangs two female midgets at the same time.
Bro 1: Hey bro that was a crazy kegger last night!
Bro 2: Yeah bro I totally had a Nicki Minaj-a-trois with some carnies!
Bro 1: Nice bro! Bro-five up high!
*Bro-five*