I remember when I was 17, I went to a Haunted Hay Ride with the girl I was dating at the time. Halfway through the ride, they stopped it and a bunch of witches came out to give everyone cider and donuts. The witch that served me was wearing full gross-old-witch makeup and jokingly flirting with me, so I started flirting back.

Just as the ride started up again, I said, "So hey, what's your number?"

And she yelled, "SEVEN!" and ran cackling into the woods.

It remains one of the funniest things I've ever experienced firsthand.