S.H.I.T.
Manure:
In the 16th and 17th centuries, everything for export had to be transported by ship. It was also before the invention of commercial fertilizers, so large shipments of manure were quite common. It was shipped dry, because in dry form it weighed a lot less than when wet.
Once water (at sea) hit it, not only did it become heavier, but the process of fermentation began again, of which a by-product is methane gas. As the stuff was stored below decks in bundles you can see what could (and did) happen. Methane began to build up below decks and the first time someone came below at night with a lantern, BOOM!
Several ships were destroyed in this manner before it was determined just what was happening.
After that, the bundles of manure were always stamped with the instruction: 'Stow high in transit' on them, which meant for the sailors to stow it high enough off the lower decks so that any water that came into the hold would not touch this "volatile" cargo and start the production of methane.
The instruction was naturally shortened to the stamp ' S.H.I.T ', (Stow High In Transit)
So it’s really not a swear word, but has come down through the centuries, and is in use to this very day.
You probably did not know the true history of this word.
Neither did I.
(lifted from FB)
= new reply since forum marked as read
I prefer "Stow High In Tow"
