The Marine Corps was having some long lead times getting some repair parts for the Harrier jet. Nothing unusual, some parts have to be made as needed.
She randomly picked some part numbers and asked what they were. Somehow I got tasked to research the parts. This occurred in the days before the internet was mature, so I spent a day doing the research: finding an aviation maintenance officer, getting the reference material, double checking the part numbers and then writing up the report.
So basically her management style was to waste subordinates' time asking stupid questions.
I learned that one at a management seminar 30 years ago. The problem with this stunt is the many VERY sharp people at all levels who notice and remember everything.