An advanced sexual practice where the female is on here period. You start by putting the female on her head(vagina facing up) and proceed to have intercourse for at least an hour. All the blood will build up and sink to the bottom of her vaginal cavity. You then tell her to contract her vaginal cavity causing the blood to ooze out. Then you have just preformed The Mt Red Rushmore

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