Start with one frozen margarita glass, fill with grapefruit juice, garnish with one fresh orange wedge.
Now set it on the side of the pool and drink slowly as you float around in the water.

I take no credit for the name. My wife came up with it while she was fixing herself the drink.

This is Vertical Month for some of us PADers. Check out who is participating at either
David Clunas's May PAD page or Bob Floyd's Vertical PAD Topic.