1 watermelon, chilled
2 cans frozen concentrated lemon juice
Crushed ice
1 lg. bottle ginger ale

Cut oblong hole in top of watermelon. Scoop out watermelon meat. Remove seeds, mash half of watermelon meat. Mix watermelon, lemon juice, ginger ale and crushed ice. Pour in watermelon rind hulled out which is used as a punch bowl. Chill rest of watermelon for second serving.