A butt baby is a person that looks like the combination of two male celebrities or men you know
That guy looks like Leonard Nemoy and William Shatner had an illegitimate butt baby
by Mooseburgers June 10, 2018
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When a guy comes up behind a girl and grinds them. Most often, the action is unsolicited.
At the club last night, I had to stay close to my friends because so many guys were trying to make butt babies with me.

I don't wanna make a butt baby with you!
by tinybubbles95065 June 18, 2010
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A baby that smells like butt
Sam: Yo man did you hear Terry just had a real butt baby.
Jake: Yeah man that baby stinks.
Sam: They should really watch it.
by Aruuuu May 16, 2016
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When fecal matter and sperm mix, usually the byproduct of when a man ejaculates into another man's rectum via the anus canal. This is considered a gay sex act in certain circles.

In typical heterosexual relationships, a man's sperm usually fertilizes the women's eggs via vaginal intercourse. When it comes to making a "man butt baby," the egg is replaced with what is colloquially known as a turd.

"Taking a dump" or evacuating one's bowels after engaging in said act is also known as "delivering a man butt baby."
John and I made a man butt baby last night in WeHo!
by New Old Jersey May 1, 2015
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A mutant baby spawned from butt sex usaully between two hillbilly males.
An unnatural ocurrance where a baby is concieved in the anal cavity of a hillbilly male or female usally occuring in the deep south
Cousins Jethro and Billy Bob had a hillbilly butt baby. Should we send a card?
by somedeadguy March 22, 2007
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the act of anal sex and can be used het or gay
I love you like my brother, you little cocksmoker, but we ain't making butt babies together.
by weswingaroundsun June 19, 2006
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A person who was born from an anal creampie that dripped from the woman's asshole into her pussy creating pregnancy.
(someone) was being a real Asshole Butt Baby the other night on call.
by unkattack9000 February 11, 2023
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