Ever wonder where the word "shit" comes from.....well here it is Certain types of manure used to be transported (as everything was back then) by ship.......well in dry form it weights a lot less, but once water (at sea) hit it, it not only became heavier, but the process of fermentation began again, which by products is methane gas.....and 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.. BOOOOM!©JOKEDEMO.COM

Several ships were destroyed in this manner before it was discovered what was happening. After that the bundles of manure where always stamped with the term "S.H.I.T." on them 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.©JOKEDEMO.COM

Bet you didn't know that one!