I thought that as well, but then I noticed the drops of blood coming off of them. That, and Cirno would have probably melted if they cooked themselves.
About the "Bloody mess" note, sangria in spanish is also a kind of summer beverage, made from wine. I don't see any link to it other than it's red, anyway...
Finally figured it out by just Googling the darned thing in Japanese. TN added.
Oh? What happ-I'll protect you all!Cooold!Sheesh, they're so loud.Taking worms out of cabbages.Mokou, Mokou, take these two outside and wash them noooow!!Waah--!!!Even we could cook these!Geez!HeeEeeAaaRrGgHh!!We've cut good.Girls are cleaning...Ha ha, Mokou-tan is no good at this.AHAHAHAHAHAHA!SangueliaThe Japanese title for the 1979 horror film Zombi 2, simply titled Zombie in the U.S.