Watermelon slicers are the new thing. There's the one you can buy at a store. And then there's the scary looking, DIY slicer.

Some people buy the manufactured watermelon slicer.

And some people like the make it yourself approach to slicing watermelons.

Looks a little scary - keep the kids a little farther away. It is effeftive and gets the job done. I'm the sure he had fun making it.