1. Obese being who finds it difficult to make friends
2. A type of russian Potatoe
3. the word used to describe a woman with no common sense or intellegance

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