Mine was in 1983 aboard a United Flight somewhere over Pennsylvania. Shortly after takeover I suddenly realized I really had to go, and I made a lightning dash for the rest room as soon as I could. Blew it out my ass faster than an SR-71 Blackbird, and louder than a Harley with no muffler. Loaded the aluminum bowel right to the rim (no joke). It was a single long huge curling meaty masterpiece of a tribute to the prime rib I had for supper the night before. Stunk to high heaven! AND the Fvcker would NOT go down, no matter how many times I hit the flush button. It was incredible. Never had a better one since. Don't think I made any friends that day among the Flight Attendants (wonder why).
Damn, it's good to be king!