1/2 gallon vanilla ice cream
1 1/2 cups cold water
1 (12 ounce) can frozen lemonade concentrate, thawed
1 (2 liter) bottle 7-Up, chilled
Spoon ice cream by tablespoons into punch bowl; Add water and lemonade. Stir until combined. Slowly pour 7-Up down sides of punch bowl, stir gently to mix.