Hope Pinch
The Hope Pinch is the extra, self-tightening of the anal sphincter when suffering from a severe case of diarrhea. The o-ring is pinched much tighter than usual in hope that one doesn't not accidentally shart or shat themself. The Hope Pinch is most commonly deployed when one battling severe squirts finds themself, or is required to be, a less than comfortable distance from the nearest restroom.
Gary had been suffering frome severe diarrhea for several days. Finding himself on the brink of dehydration, he needed Gatorade. Having no choice, he did a Hope Pinch and headed to the grocery store. Unfortunately as he pulled into the parking lot, all Hope was lost and Gary had the warmest, wettest assplosion yet.