Spoiler tags allow you to write text that some users may not want to see and hide until the reader chooses to see it.
Spoiler tags are just like editing HTML in your comment. Just wrap the new <spoiler></spoiler> tag around any text in your comment, and that’s it!
Once the comment is posted, the spoiler text is hidden by a gray background overlay. Hover over the spoiler text to reveal the content. If you’re on mobile, tap the spoiler text to view it. Spoiler tags appear whether you’re viewing the comment in the thread or in a notification. It also works when creating a channel discussion on Disqus.com