For those who don't know about the Harlem Shake yet, here's the skinny: it's a viral video trend that's all the rage on YouTube. The first half of the video features one person dancing in a room full of people, but when the beat drops, everyone joins in on the fun. Here's a version with almost 50 Harlem Shakes going on at once, if you want a quick intro to the movement.
You kind of have to see it to believe it, so check out Kendall, Kylie and Ryan's version of the meme above. We love Ryan's hand movements, they really sell the thing.
Catch the Kardashians this Sunday and Monday on two all-new episodes of Kourtney & Kim Take Miami, 9/8c on E!