a fictional story about how the critically acclaimed slender man goes around raping college girls. My girlfriend just said that he was totally not raping them, just taking their virginity. Now she is trying to defend slenderbone. Totally weird and with some smutty lesbian sex scenes in it too.

Yea, it was weird..

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