An Aphrodisiac!

The pills you've bought are, according to the label and a few dozen "users" on the internet, the best aphrodisiac available on the market. One pill is supposed to be quite enough to, within a quarter of an hour, turn a relatively normal man or woman into a virtual sex machine!

You don't really believe in it, especially as a very small text on the label says, "Note that the effects may vary greatly between individuals!", but you bought it anyway and now you can only wait and see what happens...