This is something that my parents always serve at their Christmas party, but it's great any time of year. I think it came from my mom's boss Vance.

1 can frozen lemonade
1 heaping tbsp frozen orange juice
1 can (as in, from the lemonade) bourbon
ice

Combine lemonade, orange juice, and bourbon. Pour half of mixture into blender and fill rest of blender with ice. Blend, remove, and repeat with other half of mixture. Pour slush into large freezer bag (or use something else, but this makes it easy) and freeze.