Top definition
Spontaneous Mouth Birth (SMB)

Drinking/Eating something so fully and completely vile that it will cause pregnant women to immediately vomit the child through the mouth, giving birth orally.

Often times the side effect of drinking a friend's specially crafted "micro-brew style beer" Like a mulberry beer.

Essentially, vomiting horribly...
My wife took a sip of your micro brew and had spontaneous mouth birth . It was THAT BAD!
by Decrata September 03, 2013
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The vengeful act of crapping on a lover's chest while they sleep.

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