I dreamt it up one day while fighting a serious watermelon craving.I wondered if, when sliced, watermelon would form into delicious little ice cubes. It turns out, it does.All hail the frozen cocktail! To make this delicious beverage you need just 5 ingredients: Watermelon, limes, sugar, white rum, and club soda. That’s it! Simply muddle a lime with rum and sugar, add watermelon ice cubes and juice, and top it off with club soda.You’ll be in grown-up limeade heaven in no time. The best part about this cocktail – besides the fact that it takes no time to throw together – is that the watermelon ice cubes get all melty and boozy and make the perfect treat to munch on as you sip the drink down. Sure, you may look like a fool maneuvering a straw to slide watermelon cubes up the side of your glass directly into your mouth, but it’s totally worth any embarrassment you may experience. We enjoyed these drinks alongside tacos one night, and the combination was just outstanding. When our glasses were empty, we were quickly left wanting more. So be prepared to provide plenty of refills for your adoring guests.