When you have a boner at a time when you dont want one, but for some reason you just can't get rid of it as a result of subconscious sexual thoughts. When you try to distract yourself from sexual thoughts in order to lose the boner, sexual hallucinations only worsen. As a result, the boner only stays longer and you have no power over it.
John: "Man, I was in class today and I got this huge boner and all of a sudden, I could only think about sex! I hope no one saw it."
Fred: "Dude, that sounds like you had a bad case of Subconscious Boner Syndrome!"
Fred: "Dude, that sounds like you had a bad case of Subconscious Boner Syndrome!"
by joshpicillo January 11, 2015

by Rutta11 June 22, 2016

"I was so proud of you for repping your boner last night, that was actually kinda sexy""
"Eww Jason ToTaLy didn't rep his boner last night"
"Eww Jason ToTaLy didn't rep his boner last night"
by Heather Locklier May 15, 2008

What's up with Fionn recently he's acting a right knob?
Haven't you heard? He's the first person in the world to get extreme boner syndrome, he's basically a giant walking cock.
Haven't you heard? He's the first person in the world to get extreme boner syndrome, he's basically a giant walking cock.
by Honeynuts December 4, 2019

Saying men use to compare something extremely embarrassing, to. Derived from experience some male teenagers go threw in which they get an erection in a gym class that ends up being extremely noticeable because of the loose basketball shorts everyone must wear in gym class.
Steve, "Dude did you just fart in front of Lisa?"
Brad, "Yeah, it was more embarrassing then a boner in gym class!"
Brad, "Yeah, it was more embarrassing then a boner in gym class!"
by atrain595 June 1, 2011

by Sammy Saggysack October 18, 2008

by longboards September 19, 2009
