Diminishing marginal utility

Imagine you are really hungry and you have a yummy chocolate bar. You take a bite and it tastes amazing! You take another bite and it is still pretty good. But when you take the third bite, it doesn't taste as good as the first or second bite. In fact, you might not even want to eat anymore chocolate after a few more bites because you are getting full, and it doesn't taste as good as before.

This is kind of like what happens with diminishing marginal utility. It means that as you consume more and more of something (like the chocolate bar), the satisfaction or enjoyment you get from each additional unit decreases. You are still getting something out of it, but not as much as before.

For example, the first scoop of ice cream might be really tasty, but the second might not be as satisfying. By the time you have the third scoop, you might not even want it anymore. This is an example of the law of diminishing marginal utility.

So, basically, the more you have of something, the less enjoyment or satisfaction you get out of each additional unit because your needs are being met and you're getting full or satisfied.