if you are the first person other than me in this thread, make a spoiler about this spoiler message, and then put the whole thing as a spoiler. in other words ruin someone's day by spoiling this spoiler for them in another spoiler. if you aren't the first person in this thread then use the last spoiler message made. i know, this spoiler-ception is hard to understand < Read this spoiler, then the next one
Example: i reply to the last spoiler message, it says "this is a spoiler", with something along the lines of "the previous spoiler says that it is a spoiler haha you're welcome" and then put that message in a spoiler.