The explosive discharge of small, sharp plastic toys that occurs at children's parties and holiday events.
Derives from shrapnel + cheap plasti-krap, a description which encompasses both the sharp, weapon-like properties of the toys and their uselessness, and thus propensity to scatter on the floor of children's rooms where they cut parents' bare/stocking feet.
"Picture the aftermath of a bomb explosion, but instead of shrapnel, it's...poop confetti. Usually found artistically splattered around the rim of a toilet bowl. It can also refer to the remnants of a particularly aggressive flush or dramatic defecation. This phenomenon often follows a dramatic, explosive restroom event.
'The toilet looked like a war zone, and the culprit was clear upon inspection—crapnel.'"
'We broke up after she was injured by my crapnel."
'The moment at work, when one employee's reprimand, spirals out of control and the conflict now involves other employees - a crossfire of crapnel."