Sometimes, approaching others with open ideas are the worst thing to do.
In fact, there's no such thing as being nice, explaining why something's not in proper order, or being..nice.
Most of the time, you need to get it into their thick skull about what's right and what's wrong; even if you were to use a hammer to crack their skull.
The funniest method would still be sarcasm, not through jokes.
I think some people are just plain idiots.