Okay kiddo, have you ever played with a ball? It's round and you can roll it or bounce it, right? Well, a spherical category is kind of like a ball that has different parts inside it.
In fancy math terms, a category is a collection of objects and the relationships between them, kind of like a group of friends and the ways they interact with each other.
A spherical category is a special type of category where there is a central object, kind of like the core of a ball, and all the other objects in the category can be linked to it in a certain way.
Think of it like a game of tag. The central object is "it" and every other object is either "tagged" or "untagged" depending on whether or not it has a specific relationship with the central object.
This type of category is useful in lots of different areas of math and science, from physics to computer science to geometry. But the most important thing to remember is that it's like a ball with a central core and lots of different parts that are all connected to it in a special way.