Joe, I'm Beer'd Out, What's A Good Summer Beverage?

Ahh, you've come to the right place. (a re-post, but hell, it's summertime)

In a tall glass, fill with block ice
2 oz. (a shot or two) of white or Reposada tequila
1 tsp sugar (optional)
Finish off with Grapefruit soda (Squirt)
Top off with a lime

Remove shoes, kick your heels up, put on some Gary Allan and chill for a while.