Is a fart that rolls into the vagina! Rolling ~thunder leaves an uncomfortable Sensation. A feeling of thunder down under, that travels to your lady parts. It hurts at first then feels like a bubble, and you feel an urgency to pop or Wiggle the bubble out.

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