1 definition by youadirtygirl

Top Definition
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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