The Mailman's Nightmare

I have this recurring nightmare
And that is that everyone in the world
Except myself has the problems of babies
I mean they’re normal height and everything
Five feet, six feet tall but they have these giant heads
Like babies, you know?
And enormous eyes and tiny arms and legs
And they can hardly walk
And I’m going down the street
And when I see them coming
I give them some room and step aside
Also, they don’t read or write
So I don’t have much to do
Job wise, it’s pretty easy