To take a shot of liquor and pass it around mouth to mouth. Similar to shotgunning weed. Preferably done with cuties.
She and I were totes motherbirding Jameson to Samo, and then A-trak was like, "only if Samo passes it to me."
by ghostofmakeoutpast April 25, 2011
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When a girl is finished giving oral sex, and the man ejaculates into her mouth, she spits it back into his mouth, much like a mother bird spits up worms into its babies mouth to feed them.
Somewhat like snowballing.
David likes it when I start motherbirding in his mouth. Davey like it.
by youadirtygirl November 29, 2011
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A female of superior wit and intelligence, she is the leader of other females in her vicinity. She recognizes that she is a bird, as are all females, but uses her lofty intelligence to manipulate and control all females below her.
Drew: I was talking to this girl, and she knows about how women are birds! It was amazing I finally found a female who isn't a bird.
John: Beware Drew, for she is the motherbird. She knows what she is and is more dangerous than the bird with the fanciest plume.
by Nikki1987 March 06, 2010
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To vomit, especially as a result of having sexual intercourse with inanimate objects while eating or smoking marijuana.
"Dude, WTF! You just MOTHERBIRDed on the SOFA!"
by TooTooTheTooCan October 21, 2007
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When you ejaculate in her bum, then suck it out, and spit it back in her mouth
by Motherbird creator September 07, 2017
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The religion that worships the almighty mother-bird,

Founders:

MH and GHM
Hey have you seen that really big seagull?
Yeah, that’s motherbird. *Starts violently praying*
What are you doing??!
Im a disciple of motherbirdism.
by Hayshit August 06, 2021
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