Isn't it nice when other people can see the humor in the little ridiculous and quirky things in life?
Yesterday I was stopped at a parking lot intersection with two others cars (no markings to help you out and more obscure than your average parking lot). One car waved the other through, which was fine. Then I waved that car to go and got confused because I couldn't see if his blinker was on. I started to move, then stopped, realizing my mistake. He completely "got it", we both started cracking up (which we couldn't hear, but just see), I again waved for him to go and he turned in front of me with a big grin and a thumbs up.