why boner
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)
you: why boner?
boner: because.
boner: because.
the why boner
A super awkward boner when confused with a person's gender.
well isn't the return of the why boner...
Why Boner
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.
"Ah, the return of the Why Boner... WITH A VENGEANCE!"
Why Not Boner
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".