Or it's all about the juxtaposition. I make liberal use of a blog reader to keep track of all the stuff I am reading. I am a big fan of feeds that give me the full entry in the RSS feed to reduce my need to click should I be viewing on a work break. And sometimes, as I scroll through, it creates its own funny moments. Such as when i scrolled past "The hot new sausage" to find the next article was, "The joy of nude musicals".
Oh, and apropos of, well, phalluses, Lynn Viehl has this response to those who disagree the sci-fi contains a number of phallic symbols.