The pain endured after a through 'passing' session on ones throne. Often caused by spicy food consumption or 'getting the runs'.
Is also a product of anal love making.
Can also be used as an insult, or a term for feeling overwhelmed in a work situation.
"Ouch, i've got such terrible hoop-sting today Daz!"
"God, we getting hooped today!"
"Emma, you're a hoop-sting!"