Blat (favors) is when someone asks for something that they want or need, and another person helps them out even if it goes against the rules or isn't fair to other people. It's like when your friend brings cookies to school and gives you one even though you're not supposed to eat in class. Your friend is doing you a favor, but it's not fair to the other students who follow the rules. In many places, blat is considered a bad thing because it can lead to corruption and inequality.