It used to seem like about 50% of the AMP providers (from Boston to DC) would give a good salad tossing as a standard part of the service, right before covering up Jr. They never asked me if I wanted it. The light touch part of the massage just turned into it. I always get the table shower. So, at least they know it is fairly clean. I guess. At one point it must have been even more common if it (the act) was nicknamed "Asian. ".
In some South American markets, besos negros ("Black kisses") are common, too.
