The Great Disappearing Yogurt of 2009

This evening I went to buy a few groceries.
Among other things, I bought four containers of cherry-vanilla yogurt.
Yet, when I checked through my bags, I found only three.
At first I thought it had fallen onto the floor of the car, so I checked thoroughly.
Nothing.
I checked and double-checked.
I distinctly remember putting four yogurts into the cart.
I remember paying for four yogurts.
I remember seeing four yogurts in the grocery bag as I was wheeling the cart out of the store.
Yet, somewhere along the journey, one of them decided to make a break for it.

Possible things that could have happened:

1) The 4th yogurt was actually a shape-shifting supervillain who had to leave abruptly to work on the newest earth-conquering scheme: Vanishing Dairy Products.

2) The 4th yogurt got stolen by a starving supermodel who learned how to be invisible by closing her eyes and thinking of shiny objects.

3) There was no 4th yogurt; I was merely hallucinating as a precursor to going completely insane.

4) Yogurt #3 and #4 merged into one so they could confirm their undying love for one another.

5) One of my alternate personalities ate the yogurt without telling me.

6) Yogurt #4 was ostracized and rejected by all the other yogurts, because it kept leaving the toilet seat up.

7) Yogurt #4 ran away because it wanted to see the world and experience new cultures.

(Ha! Get it? Yogurt? Culture?)
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