(HAND-SUM-HARE-E) noun 1) The act of a penetrating a girl while she is dressed up in a dress of some type (this usually implies a slightly formal dress, but can be as casual as a sun dress). It typically implies flipping up the dress in a way that only allows access to vaginal area (top stays on)
After I chatted that bridesmaid up for an hour I took her back to my room and gave her a Handsome Harry half way through the reception.
When an innocent young man is seriously told that masturbation will cause hair to grow on the palms of your hands, he will often immediately look at his hands thus causing raucous laughter from the others.