A loner boner is when you get a boner/masturbate to fictional characters because you're lonely and don't have anyone in real life
Guy 1 "Bro, I was playing Persona 5 the other day, and got a boner when i saw Futaba."
Guy 2 "Damn, i thought you said you had a girlfriend."
Guy 1 "I do."
Guy 2 "Then why did you get a loner boner?"
Guy 1 "¯\_(ツ)_/¯"
Guy 2 "Damn, i thought you said you had a girlfriend."
Guy 1 "I do."
Guy 2 "Then why did you get a loner boner?"
Guy 1 "¯\_(ツ)_/¯"
by visherin March 6, 2020

Can't wait to go home and insert my penis into my wife's boner oven. I creampied in my side hoe's boner oven last night, it was great.
by penishandle June 4, 2018

Tony was working on the railroad when a train came through the tunnel causing him to achieve a railroad boner.
by Railfan22 February 8, 2023

When you have a boner for so long that it becomes so hard that it could crack the pavement on the sidewalk if you fell down
by kevro February 11, 2015

by Purest Dragon December 15, 2017

by Comanche February 17, 2017

by CGTG February 24, 2012
