Another word for 'cheating mother fucker'. Mostly heard when one cheats in any type of sporting or recreational activity in which a stupid rule is taken too much advantage of. Most commonly, beer pong. Used as a replacement name for the cheater or bullshitter instead of their actual name.

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