Lemonade

 2L+ juice jug

1/2 cup lemon juice (cheap works)

1/2 cup white sugar

1.5+ l cold filtered water

Ice

Combine lemon juice, sugar and about 2 cups water to the bottom of the jug and combine until the sugar is well dissolved. 

Casually add the remaining water stirring well and top the jug off with ice and/or extra water. 

Serve over ice in a tall glass. Some people may find it sweet, add extra ice or a touch of water for them. Keep refrigerated. 

Some recipes heat the sugar and lemon together to dissolve it. That's dumb, it's too hot out for that shit.