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 "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