A cordless drill, a coat hanger, a plastic cup and a paring knife are the tools needed to make a Watermelon Smoothie. I'm guessing that this can be done with any size watermelon, but they're showing the small round ones being used.
Check this out: https://www.youtube.com/watch?v=IJ-h0SO8EUI
Bowhunter57
Check this out: https://www.youtube.com/watch?v=IJ-h0SO8EUI
Bowhunter57