Have you ever had your hands slapped by a ruler like nuns used to do to their students back in the day? I have. Trust me, it is an extremely effective form of punishment.
From gangster school supplies to practical tattoos, check out the 10 ridiculous rulers which will have your knuckles quivering in fear.
10 Ridiculous Rulers
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From Gangster School Supplies to Practical Tattoos
Published: Dec 10, 2009 Updated: Mar 30 2011