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Re:“I was just asked to balance a Binary Search Tree by JFK'... by huxley on Tuesday February 28, 2017 @08:10PM (#13760030)
It may be a bit dated nowadays, but from travelling through Central America back in the 80s, I made it a habit to never ever use the phrase "fellow traveler" around US border officials:

https://en.wikipedia.org/wiki/Fellow_traveller

Re:“I was just asked to balance a Binary Search Tree by JFK'... by areyousure on Tuesday February 28, 2017 @10:01PM (#13760602)
Thanks for the reference! I didn't know about that euphemism.