'What Is This Thing' is an incredibly popular subreddit. It has over 1.8 million members, all helping people to identify the objects in their possession they have no knowledge of themselves. I have no doubt that one of the biggest reasons why this online community has gotten so massive is the fact that they constantly deliver.

With a few very rare exceptions, 'What Is This Thing' cracks one tough case after another. Show them a small round "shelf" in an old mailbox, and they will tell you it's for leaving change for the postal worker to add postage. Post a photo of a strange ceramic jar and they'll reply it's a stoneware bed warmer.

Continue scrolling to check out some of the mysteries they have recently uncovered, and after you're done, fire up Bored Panda's earlier articles about the s

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