Rat tat tat Rat tat tat Song Lyrics Rat–tat–tat, Rat–tat–tat, Who can it be? Let’s go and see. Who can it be? Here is a postman. Knocking at the door. Have you any letters? One, two, three, four and five! Video Tweet Related Posts London Bridge is falling down If you’re happy and you know it, clap your hands Hot cross buns One a penny Itsy Bitsy Spider Add a Comment Cancel replyYour email address will not be published. Required fields are marked *Comment:*Name:* Email Address:* Website: Save my name, email, and website in this browser for the next time I comment.