the art of titty wrestling. in other words, a man will move a womans right breast up while moving the left down and then alternate, increasing speed. this will give her extreme satisfaction, even occasionally ending in an orgasm.

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