The only reference I'm spotting is the title, but that's so obvious I feel like it can't be right.

I do want to say that:

"The pause that followed was not merely pregnant, it was expecting triplets.

Probably a breech birth."

...is such a perfectly Pratchett-esque turn of phrase.

nice work
sorry dont get the refernce

Utterly brilliant - from the characterisation right down to the footnotes :D