ANSWER: Frotteurism is the desire, interest or act of rubbing one's pelvis or erect penis against any part of a nonconsenting person's body for sexual gratification.
LOL! I've seen that word before...I saw it happen on a subway on my way to work a few times, too!
I would do it, if I wasn't nervous at getting caught.
Did I get it right? You know I did...