"A geek is an individual who is fascinated by knowledge and imagination, usually electronic or virtual in nature. The Merriam-Webster dictionary defines the word geek as "1: a carnival performer often billed as a wild man whose act usually includes biting the head off a live chicken, bat or snake 2: a person often of an intellectual bent who is disliked 3: an enthusiast or expert especially in a technological field or activity,"

This guy is a total geek, more like the ones that bite heads off chickens or bats. He is raucously guffawing at some joke a peer just made!