I've shared this before:

One Monday morning in 2009, I came to a stop at a red light and a pickup truck pulled up next to me. The passenger rolled down his window and said, "You know, you're not a car."

I looked over and gave him the "just a minute" sign with my index finger. Then I proceeded to act like I was rolling down my window. I leaned over and said, "I'm sorry, come again?"

Both guys in the truck busted out laughing, I started laughing, the light turned green and we all went about our merry way.