Topless Robot claims to have collected the worst slashfic of all time.

I've read some of it and I just really, really hope they're right.

Acting on pure instinct, she sank her powerful jaws into the sides of his skull and bit down hard, ripping his head clean in half and scattering flesh and blood everywhere. As her teeth entered his brain, they triggered his pleasure and pain senses, sending him at once into the most disturbingly intense agony a human being can possibly experience and bringing him to such heights of ecstasy as humankind can only dream of. Then he died.