This is just a simple little thing that anyone can do. Everyone can do it. There is no age limit, you are not limited by whatever sex you may be or may not be, you are limited only by the amount of fresh produce available in your area.
Oh yeah, I almost forgot. Mongolian Eskimos are forbidden from participating in this certain experiment. Don't ask me why, something involving their religion or something.
OK, here's what you do. First, you must procure some Grapes. Buy them, steal them, borrow them, dig them out of the dumpster or whatever, but you must have some Grapes. They are essential for this experiment. I used green ones.