A baby's butt is defined by two methods. The first method is a woman doggystyle with her stomach hanging down. Her stomach appears to be split down the middle, hence two small but cheeks with a crack resembling a baby's butt. The other method is a male with a beer belly who can push his stomach together and create two cheeks with a crack down the middle.
Brenda's baby's butt was shaking all over the place when I was hittin it from behind.
by mcshittypants November 3, 2009
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A Perfect Set Of Titties Sitting Lovely In A Bra (Cleavage) ! It Looks As If They Have A Baby Upside Down Under Their Shirt, Bra, etc. Soft As A Babies Ass I Might Add!!!! D.M.T.
D.M.T., Baby Butts, Lovely Rack, Breast, Cleavage, Boobs, Ty Tys
by Epills215 October 26, 2009
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When your ass is so smooth, it's like a baby's butt.
Miss X: Damn your ass is smooth, it's a total baby butt!
Mr. Y: I just shaved it last night.
by kgb54 October 5, 2013
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the ultimate insult for any shitass being a baby butt bitch.
devin: yeah i fucked her for a whole hour and i didnt even cum.
ali b: dont lie you baby butt bitch. eat my butt.
by umbels November 16, 2009
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pants too small or too low on a child
little john has baby butt crack
by snowowl February 14, 2006
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The aftermath of a furious session of butt sex, butt babies are the resultant mix of shit and cum that is ejected from the recipient's asshole at their next dump.
After taking dick in the ass, Mattia delivered a healthy 1lb. butt baby the next time he went to the restroom.
by UvaFML November 3, 2009
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