Those look like Sylvia’s “Dogs from Hell,” lying in wait for miscreants. All they lack is a sign on the truck saying “Unguarded expensive portable electronic devices inside!” or “Valuable truck, key in ignition!”
It took me a few seconds to remember “boomerang”. When a Dad-joke form of a word is really good, it drives out the correct for a while. My sister and I cracked each other up for a couple of minutes when we were kids by abusing the word “potato”. By the time we were done, neither of us was sure how to pronounce it, which cracked us up more.
I first read that joke — You don’t buy beer, you rent it — on the outside of a Port-a-Potty at the Renaissance Faire in Black Oak Forest decades ago. I imagine Chaucer was familiar with it. It doesn’t get olde.
Is this phobia really a thing? Or just a plausible plot device?