The KISS principle stands for "Keep It Simple, Stupid." It means that when you are trying to do something, you should try to make it as simple as possible. Think about it like making a sandwich. You wouldn't want to put too many things on the sandwich or it might get messy and hard to eat. So, you would try to keep it simple by putting just a few things on the sandwich, like bread, meat, and cheese. This makes it easier to enjoy and doesn't make a big mess. The KISS principle is like that – it helps you get things done in an easier and more efficient way by keeping things simple.