16 genius chalkboard messages
Long before the days of white boards there was a thing called 'chalk' - here are some of the best chalkboard messages from around the web...
In an age of white boards and touch screens it would be easy to forget about every pre-millennium teacher's best friend, the humble blackboard.
These incredible signs prove that there will always be a need for the chalkboard - not least so that you can freak people by scraping your nails down one!
If you, like us, are a fan of amusing signage, you may also want to check out...
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