A overly thin white boy that can easily eat 10x as much as anyone, and yet, not pack on a single pound. Moreover, he will continue to pull things out to eat after a meal has been served. (fatboy, fatboyish, fatboying, fatboyed)
"Holy shit, look at fatboy go, he just finished off that bag of Oreos, and now he's making four bags of instant Maple Brown Sugar Oatmeal!"
"Hope you got some food back at your place, I'm feeling fatboyish!"
"After I smoked last night, I fatboyed three cans of Pringles!"