What completely random, ridiculous thing are you most scared of?

And I don’t mean serious things like losing people or anyone being hurt. Nor do I mean genuine phobias like insects, arachnids, the dark etc. Mine is black holes. Ever since I was about 11 (I’m in my 40s now) I’ve had this unshakeable fear that one day, I’ll be near one and it’ll just suck me in.