Verb. Stepping up from one grade to another/ moving on to something better.
Linda - What was it you wanted to talk to me about?
Steve - Alright, I'm graduating from your ass.
Linda - ...Graduating?
Steve - I'm moving on to your friend Lisa she's a lot better in bed than you are.
(In Real Life)
Yo my boy just graduated from his bitch and got himself a MILF