Retard

[Madfish]

I really wonder... you have a child with mental disabilities, haven't you experienced much worse? I only experience that kind of reaction with people who are ashamed and don't have the guts to face, even bad, reactions with a straight face.
If you love your child you'll just ignore stuff like this and shake it off. Sometimes, especially on random forums, people don't even mean it that way.

At least from what I know and from what I just looked up to make sure, retard also means "slow", being a "fool", "twit", "idiot", "git"...
I can't be sure but I'd bet the guy didn't even know about your circumstances at all... so why are you connecting completely random curses to personal matters?

Don't get me wrong, I feel sorry for your child and your family. But I think this decision of yours is... premature and not in touch with the real world at all.