Say you get a deal on avocados. So instead of buying one or two avocados to put in a salad, you take six home assuming you will have ample for some other dish. You make the salad and then your friend makes guacamole some avocado sandwiches. Pretty soon, the avocados are all gone.
The idea here is that when there is an abundance of something, it will be consumed. This is the phenomenon of "induced demand." an economic phenomenon where more of a good is consumed after its supply increases.
