sarcasm tag for HTML5

The sarcasm tag is missing from HTML5. Sarcasm is hard to recognize when reading text. I often respond on peoples sarcastic posts in a serious manner, because I can’t recognize it as sarcasm. If people have trouble recognizing written sarcasm, than that goes double for search engines. A search engine only looks for words in the text, not for the meaning of it. What if you search for something and the first five results are sarcastic? That’s useless! There has to be a different way to do it. Say you come to a website with a lot of sarcasm on it. With one click you can activate a CSS script that marks all text between the sarcasm tags red. Or if you don’t want to see it, you can make it disappear totally! Or say you’re using Google to find something. A new option in advanced search would allow you to disable all the results found inside the sarcasm tags. If you’re a fan of sarcasm, you could do the opposite and shut down all results that have nothing to do with sarcasm.