It’s Slowly Adding Up That It’s Not Adding Up

(I’m buying a couple of items at a game store, and the total is $38. The cashier and I are making small talk as I hand her a $20 and a $5.)

Cashier: *realizing the money I handed her isn’t enough* “I’m sorry, your total is $38.”

Me: “Oh! I’m sorry, I thought that was a ten instead of a five.”

Cashier: “…”

Me: “…which still wouldn’t have been enough. I’m sorry, I can’t do math today.”

(I felt a little embarrassed, but at least she got a good chuckle out of it!)