The internet has been responsible for some really weird poses that people post on their social media pages. There was the "Fish Gape" pose from 2015 (when you slightly separated your lips for every photo you ever took that year) that iconically replaced "Duckface" (when you pushed your pout forward, creating a curved-up duckbill effect) on your Instagram page.
Now we have a new pose that is all the rage. Welcome to the "Flamingo" pose. It refers to the act of keeping one's leg straight and bending the other into a slightly triangular shape, much like a flamingo does. Celebrities like Kendall Jenner are pushing this pose.
To be fair, I do this pose too.
Source: Marie Claire