Try this:

In a short low ball glass:

- fill with ice
- about an 1/2 ounce of half and half (or heavy cream watered down)
- bout an ounce of vodka or Stoli Vanil Vodka (vanilla flavored vodka, not sweetened, very common)
- about a teaspon of splenda
- add left over coffee from your AM coffee, decaf's better so you can go to sleep
- shake or stir

Sweeten to taste, add coffee to taste for Kahlua-ishness.

Carb count is minimal. Not intended for induction of course as alcohol will slow your weight loss down and possibly derail you.