anyways, i always fell asleep during sex education and never really understood how hiv or stds work or happen....i mean, people just say that it happens when you fuck around with a bunch of people....but how exactly?? is it something about the fluids in each girl or something? what's wrong with drilling your dick into different pussies?
for example, if you had 10 people, 5 guys 5 girls, that you placed and had them fuck around with each other and rotated like that once a day, for a year straight, all of which were originally clean, but the sex although no cum inside of the girls, were all unprotected without a condom, then you had them check up a year later for tests.......would they most likely have some sort of std?