That's hilarious!!!!
The first ceiling fan I installed had gold pinstripes on the blades. After I got done and it was working fine, I noticed I had installed one blade upside down without the pinstripe showing. I took that blade off, turned it over, started the fan and it wobbled!! I spent hours flipping and marking each blade and never could completely get the dang thing to stop wobbling!!
Gas cans these days come with a "non user friendly" spout.
One almost needs a degree to use one without dumping fuel all over yourself, OK if you have three hands.
I use a punch and hammer to knock the valve out of the spout...… back to normal.