Cube slave 1: "Dude, I'm soooo damn bored..."
Cube slave 2: "You should take up facial spelunking."
Cube slave 1: "Man, I'm so past that, I've been booger bombing you for hours..."
The act of kickin it in your room by yourself. All men need to get away now and then, telling your friends your gonna be mancave spelunking is a way for a guy to get away with being anti-social.
Friend 1: what you gonna do now?
Friend 2: ima go mancave spelunking for a while, see where it takes me...