Take a can of thawed frozen oj, a cup of milk, a cup of water, a cup of goat's blood, 1/3-1/4th cup sugar, 1 tsp. of vanilla,  about two cups of ice, blend on a med-high setting for about half a minute.  
I'm fresh out of goat's blood. Can I substitute Worcestershire sauce for it?  
 Hmm, how about the blood of a virgin?  You should be abe to find that here pretty easily.