The act of having receptive anal intercourse with multiple partners in a short period of time. The lube from the first time is still present for the second and third, allowing them to slide in with ease. The Silverlake Slide is the same thing, but without the use of condoms.

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