back boner

the term used for describing the suprising presence of an erect penis against ones lower back.
Ian surprised Susie in the post office queue by giving her a back boner.
"Do you need a Jiffy bag for that or shall we send it guaranteed delivery?"
by Shakedown September 08, 2007
mugGet the back bonermug.

Back Boner

When your spine gets stuff and hurts
Man I ran so hard today I got a Back boner
Well there’s no lube to ease that Back Boner
by Fudgedragon2005 January 15, 2019
mugGet the Back Bonermug.