Just Eat the Donut!

It is an old math joke that a topologist can't tell the difference between her coffee cup and her donut, because they are both tori (solid 3-D shapes with a hole). I made the mistake yesterday of offering a donut to a topologist. She thanked me by offering a lecture on how you can cut a torus a certain way to get a larger, albeit skinnier, torus. Seriously. I'm not making this up. Someday I will learn not to give topologists an opening. But I went looking around for fun with tori and found some torus based games for kids (and immature adults).