This is a "bikini bridge":
On Sunday, a 4chan user came up with the idea of creating a viral hoax around the idea of a "Bikini Bridge," which is when a woman's hip bones lift up the front of her bikini.
They created fake screenshots of celebrities tweeting about the bikini bridges.
They also used the unmoderated community section of BuzzFeed to create a now-deleted list about how great bikini bridges are.
They also made a CNN iReport page about it (also deleted).
On Monday, The Daily Dot debunked the hoax while it was still relatively small. It had only been tweeted around 2,000 times in 24 hours.
On Twitter, images of women's stomachs are flooding the tag by the thousands.
The tag on Instagram has also started to fill up with pictures.
At the same time over the weekend when "pro-bikini bridge" accounts were springing up, accounts that were likely also part of the hoax started attacking the idea of the bikini bridge.
Unfortunately, at this point, it's completely unclear who is in on it, who is sharing it because of the hoax, and who genuinely thinks it's a trend.
For what it's worth, the term itself has been around since 2009.
Ryan Broderick is a reporter for BuzzFeed News and is based in London.
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