Geem is a word used by geeks to describe something they are excited about.

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 word can be used to replace gum in certain instances, and was used first by Neil Mihelich as part of his own language.

someone that is uncool, slow, weird etc