defecation;

To eat so much that one must losen one's belt to make room for their new food baby

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.

when you have eated a truly stupid amount of food, thus having streached your stomach into a shape that resembles that of a pregnant lady, execpt your baby is made out of food, thus the name Food Baby. Food babies are often the product of eating rampages.

When someone eats too much, and their stomach has the little roll. It looks some what similar to being under three months pregnant. As for the name, food baby it makes itself pretty self explanatory.

When you've ate so much food it looks like your pregnant.. hence food babies

When you ate so much that you appear to be pregnant.