Casa Sanchez on 24th St in the Mission (SF) offered lifetime burritos to anyone who would get their logo tattooed on their body. IIRC, it was an attention-getting stunt that they didn't expect anyone to take them up on. But a lot of drug addicts happily did and they had to discontinue the offer. This was in the late 90s. I wonder if anyone still gets free burritos on that basis.