Engaging in homosexual tendencies that involve two women.
Jane was lezzin' out all over the place that she got the clap.
Engaging in homosexual (women) sex.
Guy : *To His Friends* Damn, Amanda and Sherri must've been wasted! They were lezzin' out right on the dance floor.
Girl #1 : Hey, why aren't we lezzin' out?
Girl #2: I don't know. Shall we?