Poop Nut

A phenomena that occurs most commonly on the male genitalia as a consequence of diarrhea, often unexpectedly. This is because someone on the toilet who doesn't yet know they have diarrhea will make the mistake of moving their bowels full-force, resulting in the liquid fecal matter rocketing out their ass like a fire hose. The impact on the water will splash the diarrhea back onto the victim's testicles, and rarely do they wipe away off all of it.

I thought I stepped in dog shit, but it turns out I just have poop nut from when I ate Taco Bell last night.