Here's the original script via Harry (https://mainstreamspanking.wordpress.com):
MICHAEL: You really are the most spoiled brat it’s ever been my misfortune to meet. I hate having to do this, darling, but for the sake of our future happiness I see quite clearly that it’s the only way. You’re horribly spoiled and you’ve got to be cured once and for all.
ANNE: No! Don’t dare to lay a finger on me. Do you hear? Michael – don’t you dare.
MICHAEL: I hate having to do this darling.
He chases and catches her.
ANNE: Don’t you dare!
MICHAEL: Sorry, but …
He carries her, kicking and shouting, to the sofa, and puts her across his knee.
At this point the family comes in to congratulate them on their engagement, but…
Their words die on their lips and they stand aghast at the spectacle of Anne struggling furiously against the spanking which Michael is about to administer as
THE CURTAIN FALLS
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And here are some examples on stage (first one is a publicity shot for the original production):
