No its not just go ahead and shout it when u ever u feel like. hehe

Yes. A polite person, when needing to refer to such a thing on the sidewalk, might say "waste" or "defecation."

I don't know if this is true or not, but interesting nonetheless: In the 16th and 17th centuries, everything had to be transported by ship and it was also before commercial fertilizer's invention, so large shipments of manure were common. It was shipped dry, because in dry form it weighed a lot less than when wet, but once water (at sea) hit it, it not only became heavier, but 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, BOOOOM! 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 "Ship High In Transport" 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. Thus evolved the term "S.H.I.T." (Ship High In Transport) which has come down through the centuries and is in use to this very day.

I believe it is a swear word but i swear when my parents are not around or sometimes in my house where they can not hear it! I dont see a problem with swearing and would let my kids swear no problem!

In most languages that I know of it is a swear word, merde, schiezen, amongst others.

Oh yes, quite a big one!! I use alternatives, like bummer :)