As explained by 9to5, the new Play something button shows up in the lower right corner of the UI in YouTube's Android app. Tapping the button will evidently start playing a random YouTube Short ...

YouTube has been testing various implementations of a “Play something” button since at least last year. The latest presents as a Floating Action Button (FAB) that serves up random content in ...

The report also mentions that the ‘Play Something’ button disappears whenever the miniplayer is active, indicating that to start new content, you need to use the app’s main interface.

YouTube is reportedly testing a “Play something” floating action button. According to a recent report from 9to5Google, this new “Play something” button appears against a black background ...