extravulvicular activity
Cheating on your girlfriend.
Guy1: Dude, you didn't shag what's-her-tits last night, did you? If your girlfriend finds out, you're dead meat.
Guy2: What can I say? We were just having a few drinks, one thing led to another, and...yes, I guess I did engage in extravulvicular activity I'm probably going to regret.
Guy1: Was it worth it?
Guy2: Oh, hell yeah.
Guy2: What can I say? We were just having a few drinks, one thing led to another, and...yes, I guess I did engage in extravulvicular activity I'm probably going to regret.
Guy1: Was it worth it?
Guy2: Oh, hell yeah.