Why do ruler manufacturers make a big thing about them being shatterproof?

Was there a ruler shattering epidemic that necessitated this

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Ruler Jokes More Ruler Jokes

Why did the blond take a ruler to bed?

To see how long she slept.

Why couldn't the anarchist draw a straight line?

He didn't have a ruler!

Shatter Jokes More Shatter Jokes

What shatters faster than your smartphone screen?

A newborn with osteoporosis.

Why do ruler manufacturers make a big thing about them being shatterproof?

Was there a ruler shattering epidemic that necessitated this