In 2017, The Gravity Falls Coloring Book called "Don’t Color This Book! It's Cursed!" was released.

Included in the book is a QR code which leads to a video file on http://disneyxd.com/colorcoded. The video is an audio podcast hosted by Soos with Grunkle Stan as a guest star. The link no longer works and redirects you to DisneyNow. But fans did save the full podcast to Youtube and Tumblr.

However the YouTube video (which was unlisted), has since gone private. So here's a reupload for fans who've never heard it.

All rights go to Disney XD and Alex Hirsch.