n. Large breasts. A Japanese slang term adapted from a transliteration of the term "boing" which, as we all know, is what good breasts do.
Dave: So much ii boin here at this anime convention, amirite Steve?
Steve: The only "boin" I see is attached to fat dudes, you blind weeaboo. Get some damn megane already.
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Boin is a unknown object, usually related to ones balls, and or beans.
"I'LL DESTROY YOU WITH MA FUCKIN' BOIN"
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It's not merely the smoking of ones boin that defines you as a man
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Synonym for "Normie." Used to describe them, considering saying "Normie" is now a thing that normies, or rather, boins, now do.
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-verb (used with or without object) to engage in the act of sexual intercourse or the conglomeration of two separate genitals. Commonly used to replace the f word so children who shouldnt be hearing the f word due to their young/virgin ears wont be corrupted. Usually spoken by realists.
Ex1: Danny, are u going to boin the "silly rabbit" tonight or not because if you need a ride to her house I will be off work at Bravo at 7.
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when you are burnt really bad and the only way to discribe it is boined. when you are boined you are fucked up
damn the wasnt a burn that was a boin
not burn boined
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