Machanist
A messed up situation where two people think they’re the only one working on a machine, but they’re both wrong and don’t know it.
I thought I was the only one working on the machine. Then he showed up with a wrench and we both looked like idiots.
We both tried to fix the fan. Now it’s broken and we’re both hot.
They both thought they were the only one fixing the truck. Now it’s broken and they’re both screaming.