and now YouTube is doing Harlem Shake!! 
-Open YouTube
-Type ‘do the harlem shake’ in search bar and Enter
-Wait 30 seconds
In one of Google’s funnier Easter Eggs, users have a fun surprise awaiting them on YouTube. Conducting a YouTube search for “do the Harlem shake” initiates a UI-style Harlem Shake on the world’s biggest video sharing platform.
The dance starts with the YouTube logo doing the classic back-and-forth seen in the beginning of most Harlem Shake videos (more often than not, by a solo dancer wearing a yellow hat or helmet).
Once the beat drops, the entire page (thumbnails, descriptions, related videos, etc.) begin to “do the Harlem Shake,” or at the very least, the meme’s version of the Harlem Shake.