Noun. When someone is excited in a message or in their writing and they show their excitement in all caps.
by Bayra Diamond October 28, 2013

When you get turned on so fast that your dick gets hard quicker than it can rearrange itself in your pants. Usually requires manual adjustment and is accompanied by drool and the inability to make rational decisions as lack of blood leaves your brain in a stupor.
Friend: “yo! Dude! Fix yourself! You got an insta-boner.”
Me: *babbles incoherently*
Friend: “Emily walked by, didn’t she?”
Me: “random jibberish* *fixes junk*
Me: *babbles incoherently*
Friend: “Emily walked by, didn’t she?”
Me: “random jibberish* *fixes junk*
by Fetch Stick August 25, 2018

having your boner ruffled and gyrated upon by another human in some fashion, in a way that satisfies a pre-existing desire, typically accomplished through grinding.
by Boner?...I barely know her! July 22, 2018

Yo Allie is so hot
yeah and she smokes hella weed
aaah shit looks like I'm about to start getting it in with her
dude you're such a stoner boner
yeah and she smokes hella weed
aaah shit looks like I'm about to start getting it in with her
dude you're such a stoner boner
by ShadowFiend45 October 26, 2017

by saltbag` November 17, 2020

I can’t believe she gave me a Red Bull Boner .
Yo bro, I tried that Red Bull Boner tactic.
All she wants is the Red Bull Boner.
Yo bro, I tried that Red Bull Boner tactic.
All she wants is the Red Bull Boner.
by Red Bull Boner February 16, 2024

A term meant to be used with the movie "The Avengers", a costume boner refers to any point in the movie where Loki's long-horned helmet and cape suddenly appear. This usually happens when he is exerting some type of power, such as when he instructs an entire crowd of people to bow to him and they obey. Much like a penis might become erect when the average male gets excited, Loki's costume tends to appear in similar events.
by Masked-Guardian February 11, 2013
