I was at a music festival and a couple kids asked if I wanted to buy a rock (it was a nice rock tbh) and that I would be their first customer! So me, being nice said I would love to! They charged me $3 and I walked away happy with my new souvenir. Then, I heard them say to the people behind me, "do you want to buy a rock? You'll be our first customer"
I was so mad and impressed at the same time. 6 years later I still carry the rock in my purse.