Not sure if this fits exactly, but there's a chiropractic office across the parking lot from my local mall, and they have a Free Massage and Info booth set up in the mall. I frequent it, especially when the masseuse is an attractive female -- which is quite often. They use one of those handheld vibrating back massager things, which I love cause it inevitable tickles the fuck out of me, especially around the sides of my stomach. Plus, it allows me to bring up the subject in passing with the masseuse, which is a nice way to get them to talk about it. They usually think it's cute.
Mind you it's always very brief and probably instantly forgotten (on their end), but like I always say, you gotta respect the drive-by. Low rejection, fond memories.