In case you ever wondered how the toothbrushes in your bathroom reproduce. It has been observed that, after many months of intermingling between brushes, a mature toothbrush will eventually spread its bristles to allow saliva spores to dribble down the side of the cup and settle around its base. Out of this substrate new toothbrushes will then spring up and grow to full size. By spring, your toothbrush cup will be bustling with a wild array of different toothbrush species, until the point comes that they are culled, plucked by a keen-eyed human and thrown in the bin.
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