When an individual takes 4-6 apples and puts them on the end of a plunger. He/she then proceeds to thrust the apple covered end up their partner's asshole. After a while, the person's asshole begins to seep out apple juice/jelly where the thruster eats it.

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