Self Portrait of a Watermelon

Ever wonder how to pick out a watermelon? I did, until I called my dad. He always picks out the yummiest melons. So, as I was at the store, contemplating my next amateur move, I called my dad and he gave me the keenest process...1. Knock on the watermelon, choose one that doesn't sound as hallow as others
2. Then feel the whole watermelon, finding any flat spots, if so, discard. Look for one with complete roundness.

I never knew, and if you didn't either, hope this helps a little, maybe there's a better way to figure it out, but this helped me :)

Enjoy your watermelon freshness!