Are you worried that you have an STD? Does it hurt when you pee? Do you have boils you know where? What would be your reaction if a stranger all of a sudden comes to you from nowhere and asks such questions? How will you feel if he says that he wants to check your private parts and make sure that you don’t suffer from any STD? No doubt, it will be a very awkward and unfavorable situation and at no cost, you’ll want to take off your pants before someone whom you don’t even know, even though you have any problem in private parts! True, isn’t it?