Warning!

Is anyone else bothered about warning signs aimed at people with less common sense than a toddler?

There clearly needs to be a 'idiocy law':

"Things that people generally work out before they learn to read, do not need signs."

I do not need jam jars labelled with "Open by hand"; I do not need to be told that things are "Slippery when wet"; I definitely do not need to be told that fireplaces are hot.