Another term for a man with a BMI of 30 and up or weighs at least 200lbs/91kg along with a potbellied stomach for which he/she doesn't realize.
Boy: Old Melonhead, you are a sacka EAD.
Father: Oh, I'm just fat, but what about you?
Boy: I ain't got no sacka EAD, Melon. You're the one with the belly and not me.