They're like the demon child of Crocs and Vibram Five Fingers:

I have named it "Fondue Slipper" because the production process is similar to cheese fondue. It's very easy to make. You just dip your foot and dry it. That's all...I am currently developing a kit which allows Fondue Slipper to make at home. Soon this new kit will be complete and you will be able to make your own Fondue Slipper that fits your foot perfectly. You can wear Fondue Slipper both inside and outside. It can also be used as slipper by folding the heel, or you can wear it without folding the heel if you want to run.

This has to be a joke, right?