It's only an insult if taken as such. Peeps like pengke can vouch for me being sensitive to certain terminology, but I wouldn't care if somebody on my FList referred to something as "gay", because I am well aware that they do not intentionally or otherwise mean it as an insult to gay people. the usage of the word has simpley evolved.

As such I wouldn't expect anybody to care about my use of the term mentally retarded unless they had issues with it.

(half the time I think you have to be closed minded and mentally disabled to be a shrink, I really do. eh.)