Ableistitis

When someone online spontaneously develops (usually the rarest and worst ever) physical disability, which they conveniently happen to have never mentioned before, shortly after saying or doing something ableist.

"Last week Sarah told a wheelchair user that they're just being lazy, and when they got angry at her she announced that she has a terrible heart disease and only has a few years to live. She hasn't mentioned this before... sounds a lot like a case of ableistitis to me."