The feeling you get when you eat way too much and it hurts to be full.
Food baby is optional
In a diner with an all-you-can-eat option
Guy 1 : Maybe you shouldn't have ate the patty melts, buttered toast, scrambled eggs, sausages, biscuits and gravy, or the hashbrowns.
Guy 2 : Yeah, my food baby is due soon. All the eating was so painfull.
Guy 1: Asking for a second serving was also a bad idea.