PIE-FIE パイハイ 파이하이 whatever
I can't remember who originally recced this, but after seeing it I couldn't call it "P-I-dot-F-Y-I" a second longer. It's Paifai to me now.
EDIT: THE ORIGINAL REC WAS RECCED UNDER THIS POST GG https://www.pi.fyi/rec/cls9oxevo00gn12ult19zclxn