When something about a male is so ridiculous that it enters the realm of dickdiculous. Originally used strictly for describing the male genitalia, the term has moved on to describe any feat of male ingenuity/prowess/accomplishment/girth.
Oh man, dude, that hit you just took was dickdiculous!
"I don't think George Bush is a bad guy - he's like the guy at a barbecue that you put in charge of the wiffleball - but then suddenly, you put him in charge of everything, and he starts to throw EVERYTHING at them - like the hamburgers and hot dogs - and he keeps saying, "we gotta get them before they get us," but then you realize, they don't even HAVE any hamburgers or hotdogs..." that's dickliculous. (The preceding is a paraphrased quote from a comic on tour with Jon Stewart I can't remember his name but he is hilarious.)