Check out A Swearing Quickie by rogersgeorge. Here is an excerpt:
I don’t do it, and I’ve written about it a time or two, but it’s been a while, and I kind of like this Adult Children comic on the subject.
A sequence of random punctuation to denote swearing is called a grawlix, by the way. The jagged edges on the speech bubble is a nice touch,…
The full article is available here.