A good rule of thumb to follow once you’re in jail, it’s best to be on good behavior and not make weapons or drugs. It’s a pretty simple idea right? Well apparently not for everyone.

WIBX is reporting Oneida County Sheriff’s Deputies have charged an inmate at the Oneida County jail with promoting prison contraband. Why you would do this in jail is beyond me, but here’s the full story.

25-year old Shaun Andrews of Brooklyn was arrested for possessing a homemade “shank” he had fashioned from a toothbrush that had been sharpened at both ends. The weapon was found by corrections staff during a search of Andrews’ property during a housing unit change. Andrews is being held at the jail on a felony assault charge.

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[via WIBX]