The Romi or previously called Romanian Gypsies believed shooting a bullet into the ground and penetrating the coffin in question would kill a vampire.
Bram Stocker used this myth in his novel Dracula but he added to it by making the bullet silver and calling it a “sacred bullet”.
You also know a sliver bullet is the only thing that can kill a werewolf
Mari Wells 
Another good reason to get out of the coffin and into a regular bed. I always look forward to your fun facts about the fantastic.
I agree staying in your coffin is being a sitting target. Beds are comfortable and have so much wiggle room for those of us who don’t sleep like the dead. Thank you Juliette, that means so much to me. 😀
Oh, those silver bullets hurt!
Yes, they do. Silver blades too.