KFC is a word used most notably by Koopin . No topic, debate, or User Profile is safe from recieving an ad from KFC. It can pop up at anytime. During a serious discussion, debate, or for any reason. The phrase is used mainly for either diffusing a serious and tense discussion or just as a signal of irrelevance to a topic or discussion at hand. Imabench mentioned it in "Official DDO History" as a (meaningless) phase used by intelligent people to drive the dumb people out without seeming conspicuous.