Self Addressed Stamp Envelope (SASE)

Self Addressed Stamped Envelope doesn't mean that you addressed it yourself. You are supposed to include an envelope that is addressed to yourself and is stamped. Made that mistake trying to get free Monopoly Stamps from McDonalds via the mail. I figured they did it to slow people down. Turns out I was just and didn't know better. However, they were nice enough to cut my address off the return label and use it as my mailing address. I didn't win but I got lots of free stamps for free food.