An old, desperate bit of grave lore. Bury the body either upside-down or on its belly, so as it won’t know which way is up. Stupid, isn’t it? Just stupid enough to sometimes work.
It’s a coin toss chance, but sometimes, the buggers never get their way to the surface. Sometimes I wonder if they’re down there now, still trying to get topside, digging themselves straight to Hell.
Flaw in this method is that time can dull your paranoia, and sometime later, a cadaver bursts out of the grave loam to take you by surprise.