A person obtaining the characteristics of over-sized ears, accompanied by wide eyes and a mischevious grin, who claims to be a jock and a chick magnet.
When you eat vast quantities of food all at once and you feel like you're belly has grown as if you are carrying a baby. The feeling of having gained weight suddenly can also accompany a food-baby.
Person 1: "Hey Brian, have you tried some of that soup?"
Brian: "I would love too, my I already ate too much. My stomach feels massive and i feel bloated."
Person 1:"Good for you for trying all that food, but I think you have a food-baby."