"T-G-I-F” vs. "S-H-I-T"
A businessman got on an elevator in a tall building.
When he entered the elevator, there was a blonde already inside
and she greeted him by saying, "T-G-I-F".
He smiled at her and replied, "S-H-I-T".
She looked at him, puzzled, and said, "T-G-I-F"
He acknowledged her remark again by answering, "S-H-I-T".
The blonde was trying to be friendly, so she smiled her biggest smile
and said as sweetly as possibly, "T-G-I-F"
The man smiled back to her and once again answers "S-H-I-T".
The blonde finally decided to explain things, and this time she
It means Thank Goodness It's Friday.
Get it, duuhhh?"
The man answered, "S-H-I-T"
- - - Sorry, Honey, It's Thursday
In the 16th and 17th centuries, everything
was transported by ship.
It was also before commercial fertilizer's invention,
so large shipments of manure were common.
In dry form it weighed a lot less than when wet,
but once water (at sea) hit it, it not only became heavier,
the process of fermentation began again, of which a byproduct
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,
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 term "S.H.I.T" on
which meant to the sailors to "Ship High In Transit".
In other words, 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.