I’m awful at the art of the retort. My older brother tried his best to teach me about comebacks, but the lessons never stuck. Insults leave me stunned and silent. And so it happened one summer night in 2007 that I was mute when a college writing professor told me: “Your disability is the most interesting thing about you.” My disability, which I’ve had since birth, is cerebral palsy (CP), a neuromuscular disorder.