Klein Bottle Teapot

So I was on the internet trying to study Klein Bottles, and I stumbled across this:

http://www.kleinbottle.com/Tantalus.html#PyramidTeapot

Possibly the strangest (and coolest) teapot I have ever seen. The self-siphoning cups are pretty awesome too. The teapot isn’t a true Klein Bottle, but it is still strangely cool.

The drinking mug is actually a true Klein Bottle:

http://www.kleinbottle.com/drinking_mug_klein_bottle.htm