I frequently use the ~ in front of numbers or words to denote some fuzziness about their accuracy. It's a tremendously handy symbol for this purpose, as it oth

I frequently use the ~ in front of numbers or words to denote some fuzziness about their accuracy. It's a tremendously handy symbol for this purpose, as it otherwise requires a lot more thought or typing to get across a similar meaning (eg. even one or two 'approximately's or 'roughly's will rapidly reduce readability). Denoting sarcasm would be a retrograde step -- part of the thrill & delight of being sarcastic is that the target is oblivious to it. One worry would be that accidentally inserting a single character (which already has a well understood meaning for the literate amongst us) becomes quite a big risk if it changes the entire tone of the preceding sentence / paragraph / thought. Plus of course there's the risk of rapidly escalating double-bluffs. Would ~~ be unsarcastic, or doubleplussarcastic?