Tropical Orange-Guava Punch

1 gallon orange sherbet

2 cups no-pulp orange juice

1 (12 fluid ounce) can or bottle guava nectar

6 liters lemon-lime soda

Scoop sherbet into a large punch bowl. Add orange juice and guava nectar. Allow sherbet to soften for about 15 minutes, then stir to blend. Stir in lemon-lime soda just before serving.