As of writing this its April 1st and thankfully I had only been fooled once this morning (someone pranked me stating Wendys was opening a UK branch in my hometown...an hour of web searching I wasted on that this morning).
Games Workshop the Evil Overlords of the Tabletop gaming world (said with love) have used some of the animation budget to tell us all about Primaris Lieutenant - The Movie to 'try' and prank this morning. It's quite refreshing to see Workshop go back to making self-aware content for social media. I've seen this die-off quite a bit since the release of 9th Edition Warhammer 40000 with its more 'Serious' move to tournament gaming.
If you haven't seen the 54 second short I've included it below. Enjoy