now means rendering a lightsaber frame by frame.

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

When a man takes a decapitated head, mounts it neck first on his penis and then spins it around ala Linda Blair in the Exorcist, that's rotoscoping. As a hobby, the risks probably don't outweigh the rewards.