larsulriched

Verb; To act overconfident in a certain ability to preform something or in a certain knowledge, only to disappoint when actually performing that action or using that knowledge.

This word was created with the name Lars Ulrich in mind, who is the drummer of Metallica, and the cockiest motherfucker to walk the planet despite his record of messing up numerous times.

Person 1: You know those people who larsulriched their drumming skills?

Person 2: Yeah, they sucked. They were almost as bad as Lars Ulrich.