What should I give a speech on?

I really have no idea what to do. It can't be a how to speech or pursued the audience. It's just To inform them, such as the history of Egypt or string theory or Malcolm x. Any person place event or thing. Nothing sounds interesting enough for me to research and talk for 5 minutes about. I don't have too many hobbies or interests. I have a boat that I like but there's only so much i can say about it and boats are too broad of a subject. Anybody know of anything that's extremely bad *** that I could talk about?