1. the upward thrust of pants after a very powerful fart or release of ass gases.

Background: My friend and I were sitting around when he had to pass some gas while wearing very loose fitting pants. The deep bass was only surpasses by the upward 'fluff' of the pants which settled back downward after the thrust of ass gas.

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