Administrators at Colorado State University say students shouldn't use the phrase "long time, no see," because it's derogatory. Not towards blind people . . . towards people of Asian descent. It's because the phrase originated as an example of broken English used by Chinese immigrants. Or something like that. They didn't explain why.
Colorado State University's list of non-inclusive language also includes "you guys." Because it's not gender neutral.
Check out the entire list HERE