I ordered a drink and a muffin, then pulled around. The drivethru guy was quite cheery! He waved my muffin at me, "Blueberry muffin, right?"
I confirmed. He handed me my muffin and I handed him my money. He took another minute for my coffee, and I stared vaguely at nothing. I was extra-tired, having gotten up extra-ealy to meet with a contractor.
He appeared with my coffee and change, handed them to me, and waved me cheerfully on.
I looked at my hands, only one holding something, and said, "Wait, you haven't given me my muffin yet."
"I just handed it to you," he protested.
I looked at the seat next to me in surprise. There sat a forlorn muffin. "So you did!"
"I am wounded," he said. "Tears."
"I'm sorry... It must be because I haven't had any coffee yet."