"Well it hasnthappened yet" he joked "I know that i can survive my head being mostly blown off 
. I imagine their needs to be atleast some brain matter to grow off of but something like that has never happened before . Also it wouldn't be much of a challenge if u instantley chopped my head in two as we would have to wait a hour or two for my brain to grow back. That is deffinetly the thing that takes the longest to heal.