The history of words never ceases to astound me.
Maybe it's because I'm Russian, but certain words just boggle my mind and make me giddy, like the word "haywire."
It has so many meanings, and yet it comes from the simple use of baling wire by farmers back in the 19th century. When they opened a bale to feed livestock, the sharp twisted ends would spring up and around their feet and snag on their clothes and get in the way, and the old wire that was left lying around would tangle up around the livestock's legs and trip them up.
Suddenly the meaning of the phrase "everything went haywire" has a very clear picture in my mind. Fascinating.