Something that is so unbelievable, it is considered to be beyond ridiculous.
"Richard Simmons is dickliculous." (not to be confused with "dick-a-licious," or "dicklicious.")
"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.)