Verb. Pronounced as "the-marc-quint," it is a sexual act in which two rainbow-dancers are having anal sex, the one pitching approaching ejaculation pulls out of the catcher’s anus and comes in his own mouth.

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