The Chipotle Mexican Grill chain is once again launching its hyped “Tatted Like a Chipotle Bag” promotion, which last year went far beyond the food industry and became a true cultural event. On Friday from 3:00 PM to 4:00 PM, customers will receive a second entrée for free with the purchase of the first — and you don’t have to be a “full sleeve” tattooed person to participate. It is enough to show a real tattoo, a temporary drawing, or even a sketch made with a marker on your skin. The format, which was originally conceived as a playful nod to street aesthetics, has turned into one of the most discussed marketing moves of the year.