diarrhea; the runs
Colloquial and somewhat childish or jocular term for diarrhea. Often used in casual conversation or online. The ピー is onomatopoeic, mimicking the sound of loose stool.
Maybe it was something I ate yesterday, but I've had the runs since this morning.
お腹が痛くて、下痢ピーになりそう。
My stomach hurts and I feel like I'm going to have diarrhea.
Standard colloquial spelling combining 下痢 (diarrhea) with the slangy suffix ピー.
All-katakana spelling; common in casual writing and online contexts.
Formed from 下痢 and the jocular slang suffix ピー, whose origin is uncertain.