it is one of the idiosyncratic jokes that ( is persistent to comics only) started in Antique and means absolutely nothing but the fact that comics universe rules mean absolutely nothing, because the writers team cannot be bothered. Same as Giles' soul being in multiple pieces in multiple artifacts mean absolutely nothing. Same as nu'vamps being sentient and superior, but the portals to other dimensions not being opena-ble, and still the demon spirits somehow being available, means absolutely nothing. Same as Dawn starting to fade a year after magic seed was cracked means absolutely nothing. It is just a made-up lark meant to make Dracula 'special' in a special special way , and yet make him a bit pathetic at the same time. A troll hammer that cannot be lifted by anybody but Buffy. A world with only shrimp. Japanese vampires being capable of building Mecha-Dawn in a week. Billy chatting with First Slayer. Or, to put it simple - an a**s pull plot device.