The Marvelous Toy

When I was just a wee little lad,
 Full of health and joy,
 My father homeward came one night
 And gave to me a toy.
 A wonder to behold it was
 With many colors bright
 And the moment I laid eyes on it,
 It became my heart's delight.
 It went "Zip" when it moved, and "Bop" when it stopped,
 and "Whirrr" when it stood still.
 I never knew just what it was and I guess I never will.
 The first time that I picked it up
 I had a big surprise
 Cause right on the bottom were two big buttons
 That looked like big green eyes
 I first pushed one and then the other,
 Then I twisted its lid
 And when I set it down again, here is what it did:
 It went "Zip" when it moved, and "Bop" when it stopped,
 and "Whirrr" when it stood still.
 I never knew just what it was and I guess I never will.
 It first marched left, and then marched right
 And then marched under a chair
 And when I looked where it had gone
 It wasn't even there
 I started to cry, but my daddy laughed
 'Cause he knew that I would find,
 When I turned around my marvelous toy
 Would be chugging from behind.
 It went "Zip" when it moved, and "Bop" when it stopped,
 and "Whirrr" when it stood still.
 I never knew just what it was and I guess I never will.
 The years have gone by too quickly it seems,
 I have my own little boy
 And yesterday I gave to him
 My marvelous little toy:
 His eyes nearly popped right out of his head
 And he gave a squeal of glee!
 Neither one of us knows just what it is
 But he loves it just like me!
 It still goes...
 It went "Zip" when it moved, and "Bop" when it stopped,
 and "Whirrr" when it stood still.
 I never knew just what it was and I guess I never will.