When I write sarcasm, I put it in italic writing, like; what a beautiful sweater. I also do this when writing third person perspective characters like; he's ugly. But what if the character is thinking something sarcastic. Like for example, the character meets someone called John Smith. So then he sarcastically thinks; creative name. Apologies to anyone called John Smith. Anyway, considering thoughts are already in italic, there's not way of showing what's sarcasm. Sure, one can use one's brain, but that's not always reliable, for two reasons. First, opinions are subjective, so one might think that John Smith is a very unique name (statistically it isn't). Secondly, there is autistic readers out there who simply might not get the sarcasm without a clear pointing finger to it. I was not trying to be hurtful back there, I'm just stating the facts. -Not seeing sarcasm and not being good at communication in general are traits of autism. Anyway, back to the question. How to make sarcasm visually clear within already italicized writing? It's a question of writing technicality, I believe.