Garbage man Marty tries his hand at standup comedy and fails miserably until he adds the third arm to his act that mysteriously grew out of his back.Garbage man Marty tries his hand at standup comedy and fails miserably until he adds the third arm to his act that mysteriously grew out of his back.Garbage man Marty tries his hand at standup comedy and fails miserably until he adds the third arm to his act that mysteriously grew out of his back.