When I worked in a daycare center (20 years ago) we had some cheesy, generic Magnadoodle Boards. The box they came in had all kinds of mangled instructions and warnings but the one I still remember is "Don't make hurt with niddles."
At my current job I picked up a gallon size bottle of cleaning solution in the janitors cupboard. It says on the bottle, "Read all instructions before using this product. If you cannot read find someone to read the instructions to you."