A place to hang out with friends and have a few drinks. When you show up it is most likely a "cock fest" because all of the vagina is underground. When the ladies do show up, the guys are at home expecting the party to most likely be a "cock fest", so the undergound vagina can party without stupid drunk guys trying to get into their undergound.. vagina. AKA: The V.U.

A jack off buddy (from 'cum' /'come', meaning 'semen', and 'companion'); a friend that you get together with for sessions of solo or mutual masturbation
Variant of: cumpanion (from 'companion' & 'cum'); jack off buddy & wank bud & JO buddy
Similar to: fuck buddy