I remember seeing a trailer for an online scene with a girl riding a bicycle that had a moving dildo up through the bicycle seat kind of contraption. As she peddled the dil went up and down. I think she wore a dress, no panties of course, and rode the bike around. The idea of it was pretty hot. Her riding around in public boned under her dress with no one the wiser. It may have been a COHF clip. I can't remember, but it looked pretty sweet.