Jack Harlow's Piss

Mountain Dew Sweet Lightning, the flavor exclusive to KFC.

After doing a partnership with KFC, which included his own meal, it is rumored that the Sweet Lightning flavor is, in fact, Harlow's urine.

A: What is that you're drinking?
B: Some of Jack Harlow's piss.
A: Oh, the one exclusively at KFC? That shit slaps.
B: Yessir