getting a boner for some reason you can't explain; getting a boner when you consciously know you shouldn't be having one. (see: should not want)
by broanon April 22, 2011
by Rell the infinite January 21, 2016
It is a boner or erection that occurs questionably, however unlike inappropriate boners in public "why boners" usually occurs when someone sees something that gives them an erection constantly, it can lead to a new fetish or a new gender depending on what they have seen.
by Kojiro_BlackSun August 12, 2023
That moment when you know you should have an erect penis but don't for one reason or another be it known or unknown and it makes you angry.
I can't get hard for this girl because she has a boyfriend. FUCK! Let me go make some shit up for the urban dictionary. "Why boner" is when you're confused and horny. I'll call this the "why not boner".
by Dang it, Bobby! January 4, 2019