Okay kiddo, have you ever borrowed something from a friend and promised to pay them back? Well, that's called lending.
Now, imagine that instead of just saying "I'll pay you back", you wrote a letter to your friend explaining exactly how and when you will pay the money back. Maybe you also drew a picture of yourself working hard to earn the money back. That's called an expressive loan.
An expressive loan is a fancy way of saying that when you borrow money, you explain in great detail how you will pay it back. It's like a promise that you take very seriously, and you do everything you can to make sure you keep your word.
When people take out expressive loans, they usually put all the details in writing, in a contract. This helps everyone involved understand what is expected and makes sure that everyone is on the same page.
So, an expressive loan is like a really heartfelt promise to pay back money borrowed that is put in writing.