Someone who beats their keyboard in frustration when they lose at a videogame, either due to poor teammates or the sad fact they just suck. Typically sticks to beige OEM keyboards as they're the cheaapest, and cycles keyboards every two months.
Keyboard bashers are a common sight at LAN parties.
Devil 2 U: Come on guys! GET A FLAG!
***Devil 2 U was killed by KFC's artillery.
Devil 2 U: AAARRGHH!! (bashes keyboard repeatedly)