The default image that a guy thinks of as an attempt to stop himself from becoming fully erect when it isn't appropriate...
by Pit Pat Piper May 10, 2016

man one: dude, I just took a HUGE shit, you gotta see it!!
man two: bro, that just gave me a reverse boner.
man two: bro, that just gave me a reverse boner.
by BoxIconer May 2, 2022

A penile erection resulting from a feeling of pure happiness. The complete opposite of a fear boner.
After Dave witnessed the birth of his first son he was so overcome with happiness that he sprung a joy boner.
by DingDane January 2, 2018

by Bryadam90 May 14, 2015

Sarah passed out at Mikes party last night so Mike and all his buddies created a boner prison. She woke up half way through but it was too late.
by Golly_jeepers489 December 15, 2016

When you watching an action scene in a movie (doesn't have to be a Michael Bay movie) with guns, explosions, and shit so intense you actually start popping chub.
Dude the new Jason Statham movie was awesome! During the car chase when he blows up that building in North Korea I got a total Bay Boner
by Th3 KMeister July 26, 2016

by Ross T G Gibson December 4, 2023
