man pee

Okay, what is it with men's urine that makes it smell like THAT. You know what I mean, that sort of acidic/sour smell. If it were a perfume it'd be Parish Hilton: The Morning After. What happens within the male body that causes such a rancid odor to emit from their PEE? Having to spray air freshener after a man does number 1 is just ridiculous. Any medical consult on this issues is appreciated.