Twitter has begun testing a new feature for fans of reaction GIFs. Some users have spotted a dedicated GIF button in their Android apps, smack dab in the middle of the camera and poll icons. Bank of the Ozarks Director of Marketing Phil Pearlman was able to test it out for TechCrunch and discovered that the new button is a portal to a selection of trending GIFs. It also categorizes entries based on moods, so you can easily find Captain Picard if you want to facepalm. A lot of people, including Pearlman, only had access to the button for a short while, though -- it disappeared from their apps as quickly as it came.