His Brain Is Not In Mint Condition

(I’m working in a small ice cream hut in a popular summer tourist attraction. It’s been our busiest day of the year, and towards the end of the day, a few of our ice creams have unsurprisingly run out.)

Me: “Hi there. How can I help you today?”

Customer: “Can I get a mint chocolate chip ice cream, please?”

Me: “I’m sorry, sir. I’m afraid we’ve sold out of mint chocolate chip.”

Customer: “Oh, is that why there’s a big red cross through it?”