I found it (are you reading, Martin?)

CAUTION: RUDE MATERIAL FOLLOWS


LONDON DERRIERE.
(W. J. Bethancourt III)

I watch you walk upon the streets of London.
Your mini-skirt stretched tight and looking sweet.
I watch you walk, and walk into a lamppost.
I didn't see, upon the London street.

So turn your back, and wiggle softly from me!
With mini-skirt, (perhaps, no underwear!).
Your legs are great! But, by the Gods above me!
I watch your wondrous London derriere!

The Paris girls are wonders full of beauty,
And California grows the Long-stemmed L.A. rose,
Berlin nights are full of life, and lovely,
But London girls don't wear no panty-hose!

So turn your back, and wiggle softly from me!
And let me watch, and dream a dream so rare:
In my hotel, you naked there above me.
Sit on my face with your London derriere!


(Tune: "Londonderry Air" aka "Danny Boy").
(c) copyright 1990 W. J. Bethancourt III.
@parody @bawdy @clothes
AJS