noun. A fuckapalooza, with just a whiff of Michael Jackson-style Catholicism.
Real citation: "not to mention that the salesmen here have friggin foxnews on in the showroom...where it is a constant barrage of tsunami warnings, terri shiavo and the michael jackson diddlefest....driving me nuts!"
(glassowater, March 28, 2005, http://sirsyband.proboards21.com/index.cgi?board=Random&action=display&thread=1112033026)
Made-up citation: "Just because you're getting your drugs from Canada doesn't mean a diddlefest is legal."