When I was a kid in the 60s and 70s we were taught not to use retard or retarded. It was just rude.

now a days, I have noticed that young people use the term "that's retarded" quite a lot as they do "that's so gay." Quite often it means something other than the actual definition or common use meaning.

I just don't know about these yung uns. I find "7 differnt ways of ignernt" or something like "politicians must've drafted/designed that" suffices when I find something is singularly stupid.