Step 1: Roll the lemons on the counter and put a little pressure on them before squeezing.
Step 2: stir all ingredients together and serve over ice. Garnish it with a thin watermelon or lemon wedge.
Step 3: consider swapping water with club soda or seltzer to give it a sparkly taste.
Step 4: variations: if you want to make your drink spritzy, swap one-third ( 1/4cup) or more of the water with seltzer or sparkling water. If you want to use a splash of vodka, that works, too.