Free voicemail greetings

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 and the transaction. We don't need to bring Hank and paper into this. I just can't imagine a scenario where I had to prove that I bought a donut. Some skeptical friends don't even act like it didn't get that done. I got the documentation right here. Oh wait, it's at home in the file. Under D.