A twitchy little cunt, can’t keep his head still. Eats like a fucking dirty cunt. And is the lankiest slender person you will ever see. Sometimes if you make him laugh you get a spot on view of his gums!

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