Apparently they say: “When there’s blood on the streets buy property”. But I don’t think they’re being literal…I mean it’d be pretty slippery. Not to mention what it would do to the environment.
On the other hand it would create a handy excuse for the blood stains on your clothes:
“What these blood stains? Oh no they’re not from one of my victims it’s just the streets where i reside are covered in it…pesky blood.”