Possibly worse than making fun of someone's disability is saying that it's imaginary. That is not to mock someone's body, but to challenge a person's guts, integrity, sanity.
To Rush Limbaugh on Monday, Michael J. Fox looked like a faker. The actor, who suffers from Parkinson's disease, has done a series of political ads supporting candidates who favor stem cell research, including Maryland Democrat Ben Cardin, who is running against Republican Michael Steele for the Senate seat being vacated by Paul Sarbanes.