chopper mar

Noun - A screw-up who messes up when easiest to avoid.

Verb - To screw-up in a situation which can completely be avoided.

Noun:
I'm such a goddamn chopper mar!!! Who kills his own worm with a bazooka. Right near a fire drum no doubt.

Verb:
Grahul, you really chopper mar'd when you blew up your own worm with the Holy Hand Grenade.