The feeling of utter ecstasy when you let out a toilet-snake that's been brewing all day (or possibly longer). Side-effects include dizziness, drowsiness, empty thoughts, and most of all, euphoria.

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