Pre-sweetened & lemon iced tea mix (sweetened with sugar
Lemon-lime soda
Lemon

Best chilled before. Mix tea mix with one extra scoop as on tea directions, (to make extra strong). Mix this with equal parts of lemon-lime soda, and the juice of 1 whole lemon (or slice lemon and let it float in mixture.) Can substitute diet tea and soda for a great low-cal punch.