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Yeah the world of course is full of fools. If one doesn't add the tag he may create fool of himself by explaining explaining and keep on explaining the thing that actually wasn't indicated towards anyone.... Adding a tag can make life more easy.

That's the point. I can't spend hours explaining to people that I'm joking. It's happened in the past, even with the tag. If they don't find it funny, that's fine, but at least they'll know not everything is as it seems.

Yes thats human nature adding a tag makes difference