Sorry if this sounds stupid and/or messed up.
So I'm writing this goofy splatter story in which my protagonists are fighting zombies. I'm trying to make the fighting as over-the-top and ridiculous as possible. So at one point, one of the heroes reaches down the throat of a zombie, rips out its spine and uses it to impale another one. Basically, this [NSFW-ish, it's an animation though].
So, is this possible? Is a human spine sufficiently solid and pointy at the end that you could use it to stab/impale someone? If not, would it become somewhat realistic if the protagonist instead stabs the zombie in the eye and/or we assume that the zombie is decayed to some degree which makes it's body more susceptible to damage?