Define Alpha Fat Guy Meaning

Alpha Fat Guy
The guy at a conventions that is so fat that it makes all the other fat guys feel pretty good about themselves.

Scott Kurtz @PAXE: "I mean, I'm fat, but there are some fucking fat people here. I think Khoo hired some sort of alpha fat guy to sit in the corner and make me feel good about myself. He just sits there and keeps eating soup, he's too tired to chew anything at this point, and he keeps making noises and begging to leave but Khoo won't let him."
By Tomasina