Not really a MEAL, but you can make home-made Gatorade for 18 cents:
http://www.bloglander.com/cheapeats/...torade-recipe/
Here's the ingredients:
Homemade Gatorade Recipe
1/2 cup orange juice — $0.15
9 tbs. Sugar — $0.03
3/8 tsp Salt - negligible
2 liters (approx) water - negligible
Total: $0.18
Using boiling or hot water can make things go faster, but you’ll need to chill it down somehow before fridging it.
Pretty easy...
Have fun,
-Matt