When your belly falls over your belt line.
1.Duude your food baby is getting huge, dont you think its time to go on a diet.

2.Bro what the hell did you feed your food baby today?
by Wade T. Anderson May 14, 2004
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When a really skinny person (usually male) eats too much food, their stomach visibly protrudes outward forming a belly that looks quite like a preggers woman.

Really they are just a fatty.

Effect is enhanced by tight t-shirts.
I ate too much. I have a food baby.

I am carrying the food baby of that entire frozen pizza.
by TheMammonMachine October 11, 2009
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Foodbaby is actually a term in the medical field.

It has nothing to do with your stomach looking pregnant. What it means, is taking a poop is similar to giving birth to a baby. Different part, but similar symptoms.

You have no idea how long you will be in the bathroom (labor). It may be very painful or maybe not (delivery).
You have no idea about its size or what it looks like, until its born. A foodbaby is a turd or poop. you can say you look pregnant, but the belly sticking out is not called a food baby.
To go & take a poop, you can say I'm gonna give birth to a foodbaby.
by PQweefer November 28, 2011
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1. A food baby is what happens after all the food you eat is digested and comes out of your butthole, this "food baby" then continues feeding others, in many different ways.
Dude #1: "Man, you ate so much Taco Bell earlier!"
Dude #2: "I'm definatly going to have a food baby soon."
Dude #3: "Don't forget to spray!"
by nofxorelse June 27, 2006
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when someone has a larger stomach which resembles being pregnant
Juno: I'm pregnant.
Friend: Are you sure it isn't a food baby?
by ninja cheerleader August 13, 2008
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When you poop, a food baby comes out.

Dude, your food baby stopped up the terlit!
I know... I ate a giant burrito yesterday and some hummus. The labor lasted at least half an hour. I needed an epidural.
by Evian Bidet April 25, 2008
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A colloquialism used to describe waste product from an animal's digestive tract expelled through the anus (or cloaca) during defecation. See also Feces.
"Had some mean ass Mexican food 2 hours ago that's brewin' up a foodbaby."
by M3RCUTIO April 04, 2008
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