Random Rumble

I don't know what was happening, but when looking at Korra gif on tumblr, suddenly the entire episode was playing somewhere on the tumblr page. I could hear it, and it was indeed a full episode and not just a trailer. But I didn't know where was the post was, and the search was in vain. I tried to find the video in the Firefox cache, nothing.

Did I hallucinated the event?

Edit: Nevermind, it was a video auto-playing in a glitched way. I found it and watched it.