This morning as I was about to leave for work I noticed that a bird had left a souvenir on my back window. I spent about 12 seconds studying the levers on the steering column trying to figure out what combination of pull, push, turn would result in spraying and wiping my back windshield. Oh, wait.......
check the rear hatch floor or under the drivers seat. i think they included a bottle of windex and paper towels.
I'm positive you aren't the only one. I've done it too in the beginning and still think about it when I'm driving slow and it is raining.