During sexual climatic phase, hold base of cock with both hands and release semen across the torso of your partner at a downward 45 degree angle.
This act is usually accompanied with loud chinese chants.

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

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