Between Girls and guys, men and silent who wore the dirtiest of underpants. Because I know some guys who don't mind wearing boxer short for days before considering it dirty plus some extra days added before ever thinking of changing. Imaging a situation where you are sitting peacefully in a bus, a passenger is picked along the road and needs to sit on your left side on same seat. If he happens to be one of the guys i mention above that means he has to cross your front with his stinking dirty shorts. You better cover your nose.. But seriously i give it to the ladies, we are the cleanest..