Probably the coolest thing anyone on the internets has ever sent me. I open the box, which is clearly labeled as an "office chair", only to find a snarling growling Bobcat!

Here's the source: https://xkcd.com/325/

Here's my gifter's video: https://redd.it/ldcg6

and here's the video I took when I opened the box: https://www.youtube.com/watch?v=lpW3o92mC_I

Thanks a million, RandomNumberHere, you've really done something awesome!