the amazing disappearing pastry

Ok, this is for real.

We have this small box with cookie-like pastries, the kind that are attached (2) to each other by a layer of jam. Anyway, like half an hour ago I went into the kitchen, took one out of the box (which was on the table), separated the two pieces, decided to eat the one without the jam (it always sticks to either piece when you separate them) and put the other back into the box. I very, very distinctly remember putting it back and even in what position it ended up in after I put it back.

Then I ate the piece I had taken, turned around, looked in the fridge for something else to eat, didn't decide on anything, closed the fridge, got myself some water, went back to the box to get the other piece with the jam and, um, it wasn't there. Now, all that time I did not leave the kitchen, and I know that neither of my parents entered it (I even asked them afterwards to make sure even though I knew they didn't). And I know I put the other piece back and never took it again, but I still checked in the fridge and around the kitchen in case I put the piece somewhere without realizing. No results. I was/am really weirded out/semi-excited.

Was the cookie magical? Will I have superpowers in the morning? Is there someone invisible walking around our apartment? Did all of the cookie's particles suddenly appear on the dinnerplate of some alien? Is this a sign that I should just stop eating cookies? Was it an intelligent cookie that ran away? Will it eventually be found to have fallen from the table and into some dark corner?

Where is my pastry?!