An abbreviation for "I know man".
It is a less feminine substitue for "Ikr?" or "I know right?".

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

a response used when someone says something funny which you approve of. ikm MEANS 'iT kILLS mE'

I'll Kill My Self

Ikm=I Know More