Means Penis!
It's a most common slang for penis in portuguese.
Similar too: Piroca, tromba, caralho, pica, pau, rola etc.

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

This is a name calling, Like a shit, fuck among other. Is used when be nervous.