Okay kiddo, so imagine you have a friend who lives in a different world than you. In their world, things spin in a different way than they do in your world. This means that your friend needs a special set of instructions (kind of like a secret code) to understand and describe the spinning things in their world.
In math and physics, we sometimes deal with things that are like your friend's spinning things - they have a special way of spinning that needs a secret code to understand. We call these things "spinors".
Now, imagine that we want to study these spinors more closely. We want to be able to describe them and understand them better. In order to do this, we create something called a "spinor bundle".
A spinor bundle is like a special set of tools or instructions that we use to help us understand spinors. We use a bunch of tiny little "bundles" (like packages) that each contain information about how a spinor is spinning at a specific point in space.
Just like your friend needs a secret code to understand the spinning things in their world, we need this special spinor bundle to help us understand the spinning things in our math and physics. And just like your friend's secret code, the spinor bundle helps us understand things that we wouldn't be able to understand without it!