Letter from camp

Jonathan and I had the best time making notecards for him to use when writing notes to family while he was a camp. He was SOOO excited about those cards. Lindsay managed to get two notes mailed from her one week camp so I thought Jon would certainly be able to send four letters to various people while at camp for two weeks. So I waited...and waited. By day 12 I gave up, but just before we hop in the car to start the journey to get Jonathan, I check the mail and find the letter...torn into a puzzle.

It starts, "I am writing to you because I want a slurpee." Obviously, I must have promised him a slurpee if he wrote me. I'm brilliant.