Never in my entire life, have I heard someone who is disabled/has a disability call themselves a cripple .. Indeed every person with a disability I know actively HATES this word.
Just because YOU use it even though you are disabled, that does not give you the right to use it carte blanche. It offends a LOT of people.
My friend was diagnosed with a debilitating chronic illness 2 years ago, and a few months after she was diagnosed - when she was coming into the house from the outside struggling a bit with the 3 steps up to the back door, her husband said 'come on you old cripple.' She was like
then she burst into tears. He was mortified that he'd upset her, but he shouldn't have been surprised. it was a vile thing to say. He has never said it since.
And no, NO-ONE is ok if Chubby Brown or Jim Davidson says it too. You have outed yourself on the kind of people you are a fan of though. Go figure!
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