An old hairy man that wears a diaper and goes around saying "Daddy", "Mommy" or anything of that sort.
"Mmph, you sexy man baby, get out of my house."
by Not The Real Guy March 25, 2017
When you dress your infant son in adult-like clothing such as jeans and collared shirts such that they look like a miniature grown man.
Look at that little grown man baby!
by skb1212 July 04, 2014
When you dress your infant son in adult-like clothing such as jeans and collared shirts such that they look like a miniature grown man.
Look at that little grown man baby!
by skb1212 July 04, 2014
by uncookedgarbanzobean9 July 28, 2019
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."
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."
by New Old Jersey May 01, 2015
A fully grown man that by all appearances looks normal. However, once you get to know him, you realize he's a big baby trapped in a man's body.
Mary: "Are you still seeing that guy James?"
Me: "No...after awhile I realized he was a big Baby Man. I handed him a tissue and called it a day."
Me: "No...after awhile I realized he was a big Baby Man. I handed him a tissue and called it a day."
by ptownshoegal April 27, 2012
I forgot to log out of my facebook yesterday, and when i logged in this morning, my status was "I am a giant man baby gay boy."
by orofino high school January 27, 2011