There once was a time when turducken was considered extreme. But the chicken-wrapped-in-duck-wrapped-in-turkey combo doesn't even come close to the meaty monstrosity dubbed the "TurBaconEpic," shown on the Canadian Youtube channel Epic Meal Time. See it here, complete with dramatic suspense-building music.
The title TurBaconEpic doesn't do this 80,000-calorie Frankenstein justice. It starts off with a deboned quail wrapped in a cornish game hen, and a meat glue composed of bacon and veal-pork sausage. That goes inside a chicken with bacon-croissant stuffing, and it's all wrapped in "bacon strips and bacon strips and bacon strips and bacon strips" (you get the idea), which is then wrapped inside a boneless duck within a boneless turkey.
Next, the entire mass is all rolled together, wrapped again in bacon, then sewed within a pig, packed with more bacon-croissant stuffing.
Finally, it's put into a smoker and glazed with Dr. Pepper and butter, and covered with - you guessed it - more bacon.
The only way to make it more extreme now would be to wrap it all inside a cow stuffed within a buffalo. Maybe next year.