It is a shop.

You clicked a shop. I am not going to insult your intelligence by explaining what happens next.

Everything here is something I called you on the internet. People bought them. I remain baffled.

The professor, wearing one of the shirts
Printed on demand
Ships worldwide
Arrives to your home

Things I have called you

Every one of these was said out loud in an episode before it was ever printed on anything. That is the whole rule and it is why they work.

There is also a book.

One hundred and ninety-nine things you have got wrong. Every one of them sourced, with the sources printed in the back so you can prove it to whoever doubted you.

It is also a colouring book. That was the printing bill, not an artistic decision, and I would rather tell you that than pretend otherwise.

Go on then

What is this

I explain things. History and geology and whatever else somebody asked about, on video, for nothing, and I am rude throughout.

Nothing here was invented for a shirt. Every line was said out loud in an episode first. That order is the entire reason any of it is funny.

The videos stay free. They were free before there was a shop and they will be free if you never buy anything.