I’m once again reminded of its much smaller cousin, the haywire.
You’ve heard of the term, “Going haywire,” right? Ever spared a thought to why that term exists?
See, time was there was a prototype automatic hay-baler. But this was in that magic period juuust before we really got into standardized sizes. So calibration of the machine was handled manually - a mix of guessing and learning from the results of guessing.
If you’ve read Raising Steam by Sir Terry Pratchett you know that many people don’t get to learn from the results of their own guesses, due to being dead.
A poorly calibrated hay-baler had the mechanical strength to smush the hay into a tight bundle, wrap the wire around it, and tie that wire off to maintain the bale’s form. But the pressure of the over-packed hay was a constant outward force. Each bale made by an over-tight baler was potential energy in physical form.
We have a word for “potential energy in physical form” and that word is “bomb.”
So sometimes, a man would toss a hay bale and it would land with a twang and the man who’d been reaching down to pick it up where it landed was dead.
And that is what “haywire” means.