Protorus

Okay kiddo, so imagine a big round ball. Now imagine slicing that ball into many different pieces, like a pizza. Each slice of pizza is called a "torus".

Now, let's take each slice of pizza and stack them on top of each other, like building blocks. We're creating a big tower made up of slices of pizza.

But what if we don't stack them perfectly on top of each other? What if we twist some of them a little bit while we're stacking them? That's what a "protorus" is.

A protorus is a tower made up of twisted slices of pizza, or toruses. Instead of every slice perfectly on top of each other, they're slightly tilted or twisted. It's like creating a spiral staircase out of pizza slices!

This might sound silly, but mathematicians use protorus shapes to understand how objects move and how space behaves. It's a way of studying shapes and geometry in a fun and creative way.