Grandma Z's Frozen Slush

My Grandmother had 8 children and there was a housefull when we all got together, which was frequently since we all lived in the same city. She made this quite a bit.

Boil together:

1 c. sugar

4 1/2 c. water

Add:

1 (6 oz.) can frozen orange juice

1 (6 oz.) can frozen lemon juice

1 pt. vodka mix

Freeze. When frozen, stir to serve. Add 1/2 slush plus 1/2 Squirt, 7-Up or soda.