It sounds weird... but it's not, I swear. Totally regular salsa here. Mostly.
1 cup finely diced watermelon
1/2 cup frozen sweet corn, thawed
1.5 Tablespoons lime juice (fresh!)
1 small shallot (1-1.5" dia), minced
1 jalapeño, seeded/deveined, minced
dash of salt
Of course the directions are... combine everything in a medium bowl. Let sit for at least 15 minutes before serving with chips.
If you're worried that the watermelon will be too sweet/fruity for salsa, you can use the parts closer to the rind to make it more tart... and eat the rest of the watermelon :)
Makes scant 2 cups.