I was paying for fuel and the cashier asked me to confirm the amount. I said it (to the penny, which I think is what prompted this response) and he replied, jokingly “Well done! You win!” I asked “Well, what’s my prize?” He said “fair enough” and then gave me an air freshener.
It was fucking grim, triggered my friend’s allergies and we ended up binning it at the next services but nice gesture.