"50/50/90: Used to describe the phenomenon whereby a question that statistically has a 50/50 chance of being answered correctly is actually answered incorrectly 90% of the time. Used primarily in reference to nuclear operators, who tend to over-think ("nuke") a problem."
At first it frustrates the heck out of you, because you have to look up definitions all the time. Then, before you even realize, you're talking just like everybody else and nobody outside of your organization can understand you.
And I came to the Navy with seagoing experience and education... I can't imagine how confusing the language must be to someone coming from, say, a regular engineering school.