@Jennifer 1967: I did that once. I woke up and the clock said 6:00 so i thought i had time to make it to brunch. I waited until a civil hour, 8:00, to call to say i would be joining for brunch. I couldn't understand why it was getting darker and darker. I just thought a thunderstorm was rolling in. The organizer talked about a brunch in a few weeks and i insisted that no, i wanted to come to the one THIS morning. She said, quite shocked, that that had passed, had been this morning and i finally realized it was evening, not morning! I roared with laughter and hung up. This was early in my benzo use and i was all turned-around.

@All: Those gifs are fantastic! Where do you find them?