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1.
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
My bf and I used to really get it on together, but now it's just the occasional cumpadre wank
by Gladys Pipps-Knightley May 14, 2007
 
2.
Someone who you have carnal relations with. Anyone who you fuck/sleep with but is not your boyfriend/girlfriend.
Kovac: "I couldn't get ahold of you last night dawg."
Compto: "I was with Rebeca last night. She's my cumpadre."
by Phill Latio May 07, 2008