Had a kid I used to smoke dope with run off and joined the navy. First place they sent him was San Diageo. He sent me a letter. It came in a birthday card sized envelope. One piece of paper in it, unfolded. Weird colored. Purples, lavenders, pinks. At the bottom of the letter it said, "After you've finished this, lick your fingers and then cut it into quarter inch squares."Paper Acid. I loved it. Now I wouldn't trust anybody to actually get me some paper Acid.