No, I’m not swearing; simply being informative and educational ...
You see, the fairly common practice of using various grammatical characters and/or punctuation marks to indicate words that have a rather, ahem, ‘blue’ meaning, actually has a name. Yes, @*#&! is an example of a grawlix and although it’s not yet been OED certified as an honest-to-goodness, bona fide, allowable-in-Scrabble word, surely it’s only a matter of time?
In the meantime though, the Wikitionary definition of grawlix is: “A string of typographical symbols used (especially in comic strips) to represent an obscenity or swearword.” So there you are!
My thanks to the %#£@@ing* geniuses that are Hoefler & Frere-Jones for educating me on this most interesting of typographical matters.