I Am Your Hammer

you have heard the stories about maxwell, john henry, i have killed, driven steel, been a tool of justice, like peter, paul & mary said, some might refer to me as gavel, calling court to session, nails fear me, when i was hank aaron i made pitchers nervous, i show strength at carnivals, i sometimes miss making thumbs change color, you need me for tents to stay grounded, i help penetrate the earth, thor is nothing without me, throw me, hold me, pound me, love me, i am your hammer.