Yes, use a penny or any other coin to brush the bruised area and break up the blood that has gathered. Using a toothbrush or massaging the hickey produces similar results.
To get rid of a hickey using a penny, simply pull the skin taut and use the edge of the coin to scrape the area in an outward direction. It is a good idea to ice the area before because the process could be painful. Alternatively, firmly brush the hickey with a toothbrush or massage it in an outward direction to disperse the blood under the skin and greatly reduce the appearance of the hickey.