I’m a great fan of all of the “this is fine” sort of phrases for engineering failures. “engine rich” is a new one for me today, joining things like letting the magic blue smoke out of electronics and rapid unplanned disassembly.
While it isn't humorous, "delta P event" is so dryly understated that IMO it belongs (when not involving human tragedy). Delta P events would be explosions if they happened in air. As violent as an atmospheric shockwave is, the speed of sound is >4x higher underwater, in a medium that is >800x heavier. The amount of casual violence implied in a "delta P event" is profoundly unnerving.
Oh yes, today I learned that RUD (rapid unscheduled disassembly) is apparently an established term, but I didn't get what "engine rich" means until now.