Sadly, I agree with Yigeren - no community of differently able people is ever immune from having their terms of reference hijacked for use as a playground insult.
My impression is that the use of 'ret*d(ed)' as an insult is relatively recent here in the UK - encouraged, no doubt, by its widespread use in the comments sections of internet blogs and forums.
When I was a kid, back in the late '70s and early '80s, the most common such insults that I heard were surprisingly specific terms, still in common use by the medical profession. "Mongoloid" (originally a term for trisomy-21/Down's syndrome) and "Spastic" (Cerebral Palsy) were the most common - so much so that the charity formerly called the 'sp****cs Society' changed it's name in the '80's to try and avoid the negative connotations of the word.
For a short time, the insult "Joey" was even common - so called after a man called Joey Deacon, born with cerebral palsy, who's life was documented on a popular kids TV show in the UK to increase awareness of disability issues. Imagine that - having one's own name use country wide in such a way!
We can only hope that "Aspie" or "Autistic" don't end up going the same way.
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