Definitions by CreditToZFLYandJeff

gibson 

Laughing at your own joke when nobody else does.

Jeffery: "I'm a light eater. As soon as it's light, I start to eat!"
*Jeffery laughs but nobody else does*
Zack: "Jeffery just pulled a gibson!"

gibson by CreditToZFLYandJeff October 11, 2011