You may have a sign that says: "Beware of Dog"
But my sign says: "Beware of Shark"
My guard shark has nine rows of razor sharp teeth
While your Doberman mostly just barks
Yes, my shark is so vicious he'll rip off the head
Of a thief who comes near my pig bank
He'll sink his jaws fast in potential assassins
...Or he would, were he not in a tank
