Place the watermelon on a stable cutting board and chop into large wedges, feeling the cool, seedy pulp squish under your knife. Keep a towel nearby to wipe your hands as juices start to squirt out.
Carefully cut the watermelon wedges into bite-sized cubes, allowing the juicy pulp to burst with each cut. The knife should produce a satisfying squish and release fresh watermelon scent.
Crumble the feta cheese block with your fingers or a fork over a large mixing bowl, aiming for uneven, rustic crumbles that will melt slightly into the salad.
Add the freshly chopped watermelon cubes into the bowl with the feta, feeling the cool, wet pieces mingle with the salty cheese.
Tear fresh mint leaves with your fingers to release their bright aroma and scatter them over the fruit and cheese mixture.
Squeeze the lemon over the salad using a hand-held juicer or your fingers, capturing the zesty, fragrant juice that brightens the dish.
Drizzle the olive oil evenly over the mixture, watching it shimmer and coat the fruit and cheese evenly.
Sprinkle salt and freshly ground black pepper to taste, then gently toss everything together with a spoon or your hands, coating all ingredients evenly.
If desired, add a splash of balsamic vinegar or a drizzle of honey to deepen the flavors, then give the salad a final gentle toss.
Serve immediately or refrigerate for up to 2 hours to allow flavors to meld. The salad should look vibrant, with juicy watermelon, crumbly feta, and fresh mint leaves inviting you to dig in.
