by uhohspgettioh March 11, 2009

by Aakash P December 27, 2011

by Alex M November 01, 2006

by dianaandsavvy December 05, 2012

Girl: Hey, I just want to say that I like you
Boy: You do?
Girl: Yes I do... wait what’s that on your pants?
Boy: Oh sorry that’s just my insta boner
Boy: You do?
Girl: Yes I do... wait what’s that on your pants?
Boy: Oh sorry that’s just my insta boner
by AwwYeaGuurrll May 22, 2019

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

When you get hard instantly. There us no gradual hardening. Instantaneous hardening. (usually rips pants)
by Dick Guzzler July 18, 2016
