Colorado State University's administration is pushing people to stop using the phrase "long time, no see" because they say it could be offensive to people of Asian descent.
Why?
There's some evidence "long time, no see" could be based on an old Chinese phrase, but why would that make it bad? Not exactly sure, as the school administrators didn't clarify the problem.
They also want people to stop saying "you guys" and say "y'all" instead, because "guys" implies a gender, as well as "first-years" instead of "freshmen" for the same reason.