Gentle-to-medium pressure kneading motions that you administer to someone's shoulders, either to relieve aches/tension and generally soothe his overall physical/emotional status, or to simply savor his/her sinewy/pliable muscle-tissue (this is especially pleasurable if the person is not wearing any covering on his/her shoulders, since it permits you direct flesh-to-flesh contact with your hands for maximum sensory pleasure, and it also lets him/her
feel the caring warmth/softness of your hands). These
simple massages can be administered to your friend from either the
front or the rear, although it is usually safer and more comfy for the person if you do it from the
front, since this ensures that your fingertips will not accidentally
dig into the tender
joint-grooves just below his shoulders.
I love giving shoulder-scrunchies to cute chicks whom I meet for the first
time --- it harmlessly and unobtrusively builds her trust and shows her what pleasant soothing "
magic" I can work with my hands, and so she
will often permit me to gradually "progress" to other juicy portions of her real estate until I eventually have her completely stark-naked within half an hour.