Mischief had a wild idea for National Slurpee Day. Let's turn the tongue into a Slurpee canvas. We spent a good deal of time experimenting on the mouths of all of our friends and family, and then worked with our favorite food scientist, Pege Yates, to come up with a method for creating food-safe printed tongue tattoos with the Slurpee logo. Approximately 150,000 were shipped out to stores around the country, and history was made.