We had a flight surgeon assigned to each squadron. Their job was to look after the health of the squadron, so once a week the flight surgeon would have a few minutes during the briefing to talk about "aeromedical" topics. Our flight surgeon was obsessed with diet. He walked into the ready room and saw an open box of doughnuts. That set him off on a talk about the sugar high and corresponding sugar low. His final example was how eating "just ONE doughnut" could cause a sugar low at just the wrong time, like during approach or aerial refueling. He finished his lecture with what he intended as a rhetorical question, "so what did we learn today?"
Some smart alec in the back row piped up "since one doughnut is so bad, it has to be eat more doughnuts!"