Occasionally, against all odds, you'll see an interesting or even enjoyable picture on the Internet. But is it worth sharing, or just another Photoshop job that belongs in the digital trash heap? Check in here and find out if that viral photo deserves an enthusiastic "forward" or a pitiless "delete."

Image via Imgur

DELETE

There were plenty of great real pictures from Wednesday's total lunar eclipse, but it was the above (totally fake) photo that went viral this week, supposed taken from aboard the International Space Station.

But even if we ignore that the image clearly depicts a solar eclipse and not the Earth Moon Shadow earthlings saw Wednesday morning, there's still the minor issue that the picture isn't a photo at all, but a photorealistic 3D render.

The original artist, Japan's A4size-ska, is apparently none too happy about the repeated misappropriation of his piece, saying, "I can't say what I have in mind since I'm not good at English."

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For years, these pages advertising "Squatting on prick" and "One fuck, 10 minutes soak" for pocket change prices have been kicking around the Internet, originally as a "New Orleans brothel menu from 1912" before showing up again this week as a list "curated by [a] famed London madam."

Of course, they're neither, or so think Dr. Julia Laite and Alecia P. Long, the authors of academic texts about prostitution in early 20th century London and New Orleans, respectively. Both scholars were reluctant to make a definitive assessment based on an unsourced scanned image, but they agreed that it didn't appear legitimate.

"Pretty sure it's fake," Dr. Laite told Gawker. "Edwardians were far more eloquent with their euphemisms than this." Dr. Laite failed to elaborate, however, on what words could top the poignancy of "Blowing in the ass hole, new style."

Image via Imgur

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When this photo showed up on Reddit last Friday, some doubted its authenticity, with the thread's top comment reading, "It's so absurdly large that it almost looks photoshopped."

Giant oceanic manta rays like the one pictured, however, are known to grow as large as 30 feet wide. Additionally, multiple sources and alternate photos support the stated account of this ray's capture by New Jersey's Captain A.L. Kahn in 1933.

Eventually, Kahn put his catch on display, charging a simpler generation of gawkers 15 cents to check out his big fish.

Image via Imgur

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Another retro photo that's so perfect it looks bogus, this 1961 picture by F. Roy Kemp is absolutely real, with the documentation to prove it.

Here's the photo's original caption, as recorded by Getty Images:

11th May 1961: Salesman Mike Dreschler has his motorised roller skates refuelled at a petrol station near Hartford, Connecticut. He has a single horsepower air-cooled engine strapped to his back and holds a clutch, accelerator and engine cut-off switch in his hand.

Image via F. Roy Kemp/BIPs/Getty Images

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Like last week's Ebola Zombie and last month's zombie Tupac, we really, really shouldn't have to explain why this picture is false. Yet tens of thousands of people shared this photo on social media this week, very few of whom appeared aware of its utter impossibility.

For the record, Halloween as celebrated in America can't fall on October 13th any more than Christmas can come on the 3rd of June. Update your idiot Facebook friends' calendars accordingly.

Image via Imgur

*UPDATE: Today, Factually's Matt Novak has raised some serious doubts about the authenticity of the manta photo, noting the specimen's similarity to a 1917 American Museum of Natural History model and (as many commenters have) its suspiciously perfect condition. Says Novak:

My own guess is that it's the Captain Kahn manta ray is a plaster cast of a real manta that he indeed captured. There's sufficient evidence that people have made plaster casts of real giant mantas, like in this photo from 1964. And it's the most logical way to put the manta on tour with a circus company, which Kahn did for at least a couple of years.