Well kiddo, a boolean data type is like a light switch - it can be turned on or off. The difference is that a boolean can only be true or false, just like the light switch can only be on or off.
It's really useful for when we want to ask questions that have a yes or no answer, like "is the sky blue?" or "did you brush your teeth?". We can use boolean variables to store the answers to these questions, with true meaning "yes, it's true" and false meaning "no, it's not true".
For example, let's say we want to know if it's raining outside. We could create a variable called "isRaining" and set it to true or false depending on whether it's raining or not. Then we can use this variable in our program to make decisions based on whether it's raining or not.
Overall, a boolean data type is like a really simple way of representing true or false values that's used a lot in programming.