A Stranger's Fingers: Taboo Public Groping (Red Hot Quickies #1)
Suzy Taboo

You see, she's heard about a thing that the Japanese call Chikan. At first she thought it was a joke. Something made up. I mean why would a girl just stand there and let herself be groped in public by strangers on a train or bus.
Her American friends assure her its real though, and then she does her own research.
She finds it really is a massive problem in Japan... and that a lot of Japanese women really do just let it happen. Sarah is disgusted, but deep down she is more than a little turned on by the thought of a stranger's fingers...
This Suzy Taboo story is a 4,000 word, 15 minute, red hot quickie.