Just a fancy word for how many sexual partners one has had: Notches on the bedpost, if you will. Particularly useful if you want to keep the appearance of talking about it high-brow and covert.
So how'd the meet-up with that Sam from Tinder go last night?
Alright, but he wanted to delve into my coitography after the first round, I told him about the stint at Uni after breaking up with Alex, and his mood towards me changed.
Oh well, back to the drawing board.