The best use of an old toothbrush is to file it down and use it as a shank to protect your behind in prison. Your idea is a close second, though.![]()
Try to get a work detail in the metal shop. It's not fun smuggling out odd pieces of metal in your orifices, but they make great shanks. Or so I've been told....
The old tacklebox I use for gun cleaning supplies always has two or three old toothbrushes in it. They are great for cleaning gunk out of corners or grooves.
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