Okay kiddo, let me explain it to you. So you know how sometimes mom and dad tell you to follow the rules and do things the right way, even if it's not the easy way? That's because it's important to be honest, fair, and follow the rules to make things work well for everyone.
But in Brazil, some people have a different idea about rules. They think that rules are not always fair, and that they should be allowed to bend them a little bit to get what they want. And that's what we call "jeitinho brasileiro".
So let's say you have a friend who forgot to do his homework and he's really worried about getting in trouble. He might try to talk to the teacher and explain that he had a lot of things going on at home that day, hoping she might understand and give him a break. This is an example of "jeitinho brasileiro", because he's trying to get around the rules a little bit by using sympathy or persuasion to get what he wants, even though he didn't really deserve it.
But you should remember, while sometimes it might seem like a good idea to find ways to avoid the rules, it's really important to be honest, fair and follow the rules as much as possible. Let's stick with what's right, okay?