Piss being yellow doesn't usually mean unhealthy lol, it indicates your filtration is working properly. (I studied Clinical Chemistry and Toxicology- in fact you should be more worried if it doesn't have color all the time because that means your glomerulus filtration system is retaining the urea and other wastes which btw causes internal poisoning)
But yes, I also hate it in squirting scenes lol

Why’s it gotta be golden everytime a mf pisses in a manhwa. Baby go drink some water.