Subtoot, CW discourse (serious this time), trans slur
This isn't to say there aren't things that shouldn't be CW'd, regardless of how you feel about it. You may not feel stupid deserves a CW, and that's fine. But regardless of how you feel about a slur like "tranny", it needs a CW. Same with all manner of things. NSFW stuff, for instance. Or politics (generally). Violence. Stuff that might generally be upsetting, you know?