I bought a donut, and they gave me a receipt for the donut. I don't need a receipt for… — Mitch Hedberg

I bought a donut, and they gave me a receipt for the donut. I don't need a receipt for the donut, man, I'll just give you the money, then you give me the donut—end of transaction. We don't need to bring ink and paper into this. I just can't imagine a scenario where I would have to prove that I bought a donut.