I just found this on one of the other forums, it was posted by MissRibs. I would much appreciate it if it could be used in this forum. It's a simple solution.
"A new functionality for adding hidden spoilers is now available on the forums! You can add spoilers (without getting in trouble) while giving users the option to read them or not. Using bbcode, you can do this:
Just click on the ***SPOILER*** text to reveal what was written. If you do not wish to see the spoiler, simply do not click on the link.
Here's the bbcode to use: [spoiler] insert spoiler text here [ /spoiler].
Whatever text you insert between the tags will post as ***SPOILER*** and users will have to click on the link to see the text.
NOTE: When someone adds this code to their post, it will always be hidden to users by default, so don't worry about accidentally seeing the spoiler if you didn't want to. You definitely will have to click on the link to see the text. "