gp-ass
i didn't have to go during the whole five hour drive, but as soon as i turned onto my street my gp-ass kicked in and i almost soiled my shorts
the ability of the human butt to know when it is close to its home toilet
"i didn't have to go during the whole five hour drive, but as soon as i turned onto my street my gp-ass kicked in and i almost soiled my shorts" What is the definition of "gp-ass"?