by Smoerly June 02, 2018

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.
Steve: The only "boin" I see is attached to fat dudes, you blind weeaboo. Get some damn megane already.
by Estrella Muerta December 09, 2008

when you are burnt really bad and the only way to discribe it is boined. when you are boined you are fucked up
by LIL RED April 30, 2006

by MichaelAFS_2022 August 25, 2019

by Midnight Tokers April 26, 2006

by Uncleboozer August 22, 2019

Synonym for "Normie." Used to describe them, considering saying "Normie" is now a thing that normies, or rather, boins, now do.
Get this boin out of here
by Confetti-Throwing Puppet July 29, 2018
