A 21-year-old has left social-media users bewildered after posting that their mother discovered a human tooth in the sink after brushing her teeth —only to find out from her dentist that the tooth was not hers.

The unusual discovery was chronicled in a viral Reddit post from October 20 by u/gregoryghost. It has drawn more than 6,800 upvotes to date, prompting widespread speculation among viewers on the platform. Two images accompanying the post shows the tooth sealed inside a small plastic bag, with a caption that has only deepened the mystery .

"This morning my mom found a tooth in the sink after brushing her teeth , so of course she initially thought it was hers and she went to the dentist to get it checked out, but turns out it isn’t hers?" the Reddit user wrote. "According

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