Here's a couple of "modern" verses I often add when I sing it:

Now she don't wear no fancy gear, no kaftan nor pashmina
But when this gal she "kisses" you, it's like a vacuum cleaner.

Some day I'm going to get her drunk on Guinness and Ribena
And them I'll have my way with her in the back of my old Cortina.

WassaiL! V