Pajamas are just what you wear when the day's no more
You usually can find a good pair at your finer department store
Pajamas are good when you really shouldn't show
Your body in the moonlight, this is so

You can wear the kind with footies on the bottom with your top
Or you can go it with no bottom and make their eyes go pop
Pajamas--with cottony fabric in some kinds
But others find that silk is rather fine

Oh them pajamas, don't wear 'em to a bris
Awesome pajamas, on top of Santa's list
Always seem to end up underneath the bed
Pajamas, colors violet through red

Pajamas--be genius or idiot,
I don't really care--
But you should really wear your PJs on top of underwear
Pajamas! This Friday where you wanna go?
The Victoria's Secret Fashion Show!

And now you see the wealthy and the poor wear them every day
When they go out to walk the dog or cram for their MBA
Pajamas! They're out there, everywhere I see
So flanneled and casual as can be

Wear those pajamas, the fit you can't resist
Get those pajamas, whilst playing War or Whist
Look at ol' Hugh Hefner wear them 'til he's dead
Pajamas, a fashion statement, Ted!

(One extra chorus that was too good not to share:)
Wear your pajamas, or Mommy will be pissed
Find your pajamas, now do you get the gist?
Tear them off asunder, come the day ahead
Pajamas are what you wear to bed