Huehuehue. The bleeding will stop if you bugger off to rest and basically let the victim recover. Which actually seems more cruel, though if you finagle your way into playing with missing guts, you'll find you can still eat. o3o
Still, spilling and severing is one of my running gags when mauling woefully outclassed enemies. See how many guts one can severe with a spear, for example.
I know I know, I meant won't stop bleeding in a combat situation.
And yeah, it's my favorite thing to do when enemies do something to make me mad. Along with gouging eyes.