When the volume of shit is so tremendous, your butt experiences labor pains. Men experience no envy about babies, contrary to what some women think, because they poop like norse gods.
UUUH---UUUUUNNNGH!!!! Goddamn motherfucker, I just done given birth to a shitbaby! It's a sinking, stinking brown boy! Time to go for a swim thar, junior!
by Yabigdumi May 11, 2006
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A special child that is conceived by a couple by a woman removing her husband's semen from another man's anus and placing inside of her.
She used a turkey baster covered in KY jelly to remove her husband's semen from her favorite male hairstylist's anus . She then put the brew inside of her, so they could all have a bonafide "shitbaby" together. She would never have to wait for another hair appointment again.
by bushmeatburrito September 7, 2016
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-noun
The rare and unfortunate occurrence of a bowel movement that crests the leg openings AND rear band of an infant or toddler's diaper, resulting in yellow, curdy staining of a substantial area of the child and his/her clothing (and often furniture, parents, and household pets).

See also shitback and shitleg
I'd better just give him a bath and throw out his clothes - he's a complete shitbaby.
by ochawan August 20, 2008
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Synonym for drunk, as noted in Drunk: the definitive drinkers dictionary. Closely related to shitfaced.
Dude, I went out last night and just got totally shitbabied.
by Cl0wnshoes May 26, 2010
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