I’ll go first. Mine is the instant knockout drug. Like Dexter’s intramuscular injection that causes someone to immediately lose consciousness. Or in the movie Split where there’s the aerosol spray in your face that makes you instantly unconscious. Or pretty much any time someone uses chloroform.
My friend’s mom when I was a kid used to look at us in the back seat for minutes at a time while driving. She said she used the lines behind the car to stay in the lane. It scared the shit out of us, but somehow she never got into an accident. Granted, these were long, straight, country roads, not NYC streets.