matthuff

A person who is confidently champion, or succeeds in everything, while doing so meaningfully or by accident.

(While on a well known MMORPG)

Horgoth: "Dude, did you see that guy run into the dragon's den, scream his name, and trip over the switch that killed the beast as he ran away?"
Flabbergast the Orc: "yeah, that guy is such a matthuff. Dude probably got a million EXP from that kill."