The reason why many Ancient hieroglyphic texts appear “stilted and unnatural” may be because most texts that survived are found in or related to tombs and these get most of the attention because of magic cantations/utterances that at first glance do not seem to make a lot of sense, because words are translated by the meanings we know, not by the meanings they stood for within the context of the intention of the writers. (Metaphores, synonyms and such are harder to understand outside the culture that uses them). Priest canon was intended for priests to be understood and one could secure information in a text by describing it in a myth as a mnemonic form of for instance the changing times of the year that was passed on from generation to generation. Some hieroglyphic descriptions speak of what monument or tomb or pyramid was restored by which pharaoh and there is evidence of administration of market ware and produce. So one could write down a daily conversation in hieroglyphs with greetings, curses, jokes and puns included. The Ancient Egyptians used word puns often and analogies or homophones were good material for the scribes to show their skills. It seems from my own observations that the Ancient Egyptians were keen on using analogies to magically be related to the subject (often a God). They did it with forms too in their art. One of the busts of Akhnaten is deliberately sculptured to have lion features in the face. So a daily conversation could be written down as a metaphore for a deeper meaning. And the use of Proto Canaanite words in the pyramid text of Unas (3rd dynasty) shows bilingual conversations between Unas and the Gods (Proto Canaanite Mother Serpent).
On the Ancient Egyptian scripts for different purposes:
On Proto Canaanite in Pyramid text of Unas:
On Egyptian humour
The Akhenaten bust showing lion features in the face:
This bust is from the Mansoor collection and the late Edgar Mansoor whom I had the privilege to converse with did everything in his power to prove that the collection was not fake, which the German Dietrich Wildung claims. Looking at this bust shows how Ancient Egyptian artists created a Sphinx like appearance with the lion faced Akhenaten. I don’t think a forger would think of turning the face of Akhenaten into a lion faced bust while so many other busts show him with human facial feautures. If it is a forgery, Akhenaten would have paid double the price for this ‘lion king’ bust. This as a side note.
A read on metaphores among other info