Sharies is shared masturbation, but not the same as mutual masturbation as you only masturbate yourself. The term was invented by teenager Mindy Yuko (Fairy Princess Yoshikyoko) when she was 13 years old. She later co-founded Mythics of Harmonia with Lorien Loveshade (Princess Unicornia).
"Sharies is when you and a friend each take care of yourself but not each other. Usually you do it when you're sitting together and holding hands. Group sharies is when you do it with a group while you're sitting in a circle. But you can't do sharies if you're holding hands with two people! lol"
- example: I love doing sharies with my best bud Lorien. She totally squeezes my hand when she cums! Sweet!