This photo of a neck — or is it a back? — is going viral, and people are seriously stumped

Business Insider US
It's a head scratcher.

On October 6, Twitter user MartyMula tweeted a simple photo of a woman - but it has got the internet in a tizzy.

People couldn't figure out whether it was a photo of someone's neck, or a woman with long hair flowing down her back.

The tweet has amassed over 70,000 likes and 30,000 retweets, and people are still puzzled.

Twitter has a long history of tricky content that divides its users' opinions - there was the famous gold/white/black/blue dress of 2015, and the more recent Yanny vs. Laurel audio debate.

But this case appears to be closed - the photo is, in fact, a depiction of a young woman's back, not neck.

Until next time, Twitter.

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