Imagine someone got a revengeful skull tat with a message too! âKill Em Allâ is the message. I wonder why would anyone get a skull tat with this message that too on his chest? If youâve noticed carefully, the skull is carrying a big sharp knife in its mouth, long teeth adding to the element of fear to the already horrifying tattoo. Does this signify the revengeful feeling inside the heart of the guy wearing this tat?