I had a phony of a manager once (in a medical company R&D dept) who wrote down 3 words, and asked me to write the difference between them for him.
And example sentences with them, this guy was that damn stupid:
1. Know
2. No
3. Now
I shit you not. My buddy / co-worker said said I should have written:
"Oh no, now I know", he would have looked at me like a dog tilting his head.
This guy got by by busting balls, being a dick, etc. They finally caught on when a new HR guy came in years later and demoted the dummy.