For the sake of experimentation only, I tried it out, and it was alternately creepy, infuriating, and pathetic. As I decided how I wanted to scrawl my message on a pair of boobs (lettering, text, or script), I was admonished for taking too long by the faceless torso ("I hope you're handy with a tattoo gun. I thought you were fast!") as her bosom undulated in a disconcerting way.
It may seem so obvious to call out objectification, but what else could it be when parts of a woman's body accompanied by a disembodied voice are used to promote a product that has nothing at all to do with the product itself? Well, what else besides lame, I mean.