For the person on a thread to post the cliche -
Eg - on one of the weekly "why is MN so horrible and not unicorns and fairies" threads - the first person to post "people post stuff they wouldn't say to your face"
or
In any thread about voting and/or Brexit "Turkeys voting for Christmas"
or
In any driving thread "the speed limit is a limit not a target"
Do people who post this shit really think they have just discovered the theory of fucking relativity?