The title says everything you need to know about this thread.
Obviously seeing as I created this thread I'll go first. I really love r/fifthworldproblems. It's basically a subreddit where you can go completely bananas and post hyper-surrealistic darkish sci-fi problems. I said surrealistic because the entire point of fifthworldproblems is to create problems that make no sense. You know, making up elements, universes, ect ect. It's great fun. If you enjoy surreal fictional sci-fi definitely go there.