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  • Once you use a toothbrush to clean a pencil sharpener, you should no longer use it to clean your teeth.

    David Rees (2012). “How to Sharpen Pencils: A Practical & Theoretical Treatise on the Artisanal Craft of Pencil Sharpening for Writers, Artists, Contractors, Flange Turners, Anglesmiths, & Civil Servants”, p.29, Melville House