Imagine you're walking around, just a normal happy day, when you see a button that says "Press for free cookie." Well, of course you would press it. But when you press it, a bird poops on your head. But you keep pressing it, because every 100 times, you get a cookie. But not just any cookie. This is the most amazing cookie you've ever tasted. It's perfect. And as you eat this fantastic cookie, you realize that you'd willingly get pooped on 100 more times, just for another cookie. So you keep pressing the button, and you keep getting pooped on, and every 100 times, you get another cookie.

Then one day, the cookies stop coming.