Verse:CKnock Knock KnockEm Em7My house is always openCWhy shield myself withEm Em7Quills and feints and liesCI can put on quite a showEm Em7But inside I'm brokenCEm Em7C Em Em7Here it comes againCHere it comes againEm Em7Here it comes again(same as above till)Please don't stopYou'll get past my defensesMy body armour's plated over timeI got away with it onceBut I soon became addictedAmPorcupine porcupineChorous:G CAt the edge of the worldGLeave my things by the doorAmI surrender controlFmaj7 GDiving into the fallOn my back's the weightOf my offencesYou're a skunk andI'm a porcupineOur weaponary's evolvedAt the edge of the worldLeave my things by the doorI surrender controlDiving into the fallShould be right, corrections and comments welcome!
Source: http://www.azchords.com/j/james-tabs-1966/porcupine-tabs-336924.html