Man's best friend which is that one-eyed purplish nerd waiting to shoot at the stars on the end of one's meat pipe.

That miserable armless and legless friend , doomed to stay attached on one's middle leg , to whom is administered each time it is available a corrosive cunt juice shampoo, resulting in a purple sore and permanent baldness.

A funny vermillion colored mutant living in the groin area, who expresses his joy by squirting his brains out each time the occasion is given to him.

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