Notes:

You can see some steps of the gif as you go up the thread.
Additionally, if those steps/images don't show up for you, you can convert the b4k link to a 4archive link (the later site seems much more broken and fishy, but it does have Imgur versions that still exist)
There was another gif just like this uploaded about 5 years ago, but that one was pixel art

Edit: Made spoiler because flashing