Sheila's Rum Slush

I go this recipe from my parents' neighbour, Sheila.

48 oz Orange Juice
48 oz Pineapple Juice
1 cup Lemon
40 oz RumI

Mix together in punch bowl.
Bring 8 cups water to boil.
Add 3 cups brown sugar.
Boil 5 mins.
Cool and add to other indredients.
Freeze.
When ready to serve, scrape off amount wanted and add to soda, 7up etc.