When a male has to shit so bad he gains an erection. This happens when one holds their pooh too long, all the pooh pushes up against the prostate; which leads to an erection.
by Synthroid December 11, 2010
Get the Poop Boner mug.by TopeaseArlie July 22, 2006
Get the poop boner mug.by -\(^.^)/- June 2, 2016
Get the boner poops mug.