Last century when a certain navy had a proper aircraft carrier a member of the crew of a multi engine prop asw aircraft had to do doodoos during a six hour mission.
Using his inflight lunchbox he jettisoned the contents overboard.
Upon recovery the Aircraft Engineering Officer bounces up to ascertain the aircraft serviceability.
Running his finger across a "stain" "What's this ****" he questioned.
"Yes Sir that's what it is" came the aircraft captain's reply.
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