A day when your morning wood remains until bedtime. A very persistant erection that hurts and interferes with your ability to have a nice day, often caused by a long night masturbating or having sex. This can also be caused by, but less commonly, shoving a long object through the urethra.
Boss: You seem a bit irritated today - whats wrong?
Worker: Im just kinda having a bad boner day, sir.
When you witness something so magnificent, so utterly fan-fucking-tastic that it traumatises you with its brilliance, and gives you an erection.
"Holy hell, I just saw Fast & Furious 6, it gave me a Post-traumatic boner."
The guy in the hair salon who has a boner while a girl messes with his hair.
At the hair salon:
Lady 1: OMG! That guy has a boner
Lady 2: OMG! LOL! Looks like a beauty shop boner! *snaps picture*
*Guy awkwardly covers his crotch*
A boner (erection) received from something you are not actively involved in. It is used to describe how a boner is brought about.
"I totally just got a Second degree boner watching you two make out."
A Male specimen having an incredible orgasm.
Oh god, Oh god, I'm going to have lactating boner geyser
When you jerk off so hard to something you really aren't supposed to jerk off too, but you bust a fat nut anyways.
Me: Doctor! Help! I jerked off to something i wasn't supposed to jerk off to!
Doctor: Uhhh, What did you watch?
Me: Bandicoot pornos.
Doctor: Im sorry to say but, your dick is becoming a fat boner blaster.
when a males penis is erect. It resembles a link of a sausage beacuse of its spots and discoloration.
Slade Patterson's sausage boner