when you are hiding the fact that you inject methamphetamine from your gf/friends,so when you purchase said meth you pack yourself the tiniest pipe and smoke it infront of everyone making sure they all see. then with the remaining meth you sneak off and spike that vein.

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