Even though it has nothing to do with writing.
The other day, my wife mentioned that our grocery store loyalty card, which includes "fuel perks," had accumulated a $1.30 per gallon discount which was due to expire at the end of the month. What she didn't mention (or I didn't hear) was that there was more than the $1.30 built up, and that only that amount was expiring.
So I stopped to fill the tank today, scanned the card, and was surprised to see that we had a total of $3.30 per gallon in discounts waiting. I wish the pump would have allowed me to redeem only the expiring amount, but it didn't. Perhaps if I had gone in, I could have worked that out. But I simply forged ahead.
Since gas was $3.24 a gallon...well, you can do the math.
My only regret is that I didn't think to postpone the transaction, and arrange to meet my wife tomorrow so that we both could have filled up (even though it's against the rules).
Life is good!