The Dullhan is a headless rider, usually on a black horse who carries his or her head under one arm. The head's eyes are small, black, and constantly dart about like flies, while the mouth is constantly in a hideous grin that touches both sides of the head. The flesh of the head is said to have the colorand consistency of moldy cheese. The dullhan uses the spine or a human corpse for a whip, and their wagon is adorned with funeral objects. The spokes of the wheels are said to be made from thigh bones, and the wagons covering made from dried human skin. When the dullahan stops riding that is where a person is due to die. The dullahan calls out their name at which point they immendiately perish..... Taken from Wikipedia... to learn more... look up Dullahan mythology.