What are the regenerative capabilities of vampires? Can you regenerate from any injury? Can a town keep eating chunks off you that will regenerate endlessly, and the town will never go hungry? You can end starvation! And does the same thing go for your blood? Can they keep pumping blood out of you to always have something to drink, and put you in an irrigation canal while keeping your wounds permanent to keep watering the crops? Could you flood the world?
^ In Everfree: Kat: “See, that is why I say to never underestimate the ingenuity of mortals. They can forever come up with stranger and stranger schemes to baffle us with. Still sure you want to be here, moonbat?”Blaze: “I was unaware of what I would be subjecting myself to.”Duke: “It’s not normally this way, Moon, my dear. This is the weirdest it’s ever been.”
^ In Canterlot:Sonar: “What in Celestia’s name kind of question IS this?!”Justice: “Pops, y’can lay off me and vampire blood now. This thing blows my behavior completely outta the water.”
((Consider the entire group successfully caught completely off-guard! I LOVED doing all the expressions for this answer! xD))