"I have an iron lung. He keeps me away from magnets."
"I have SARS. He's tallying the people I infect."
"I'm nearsighted. He helps me read the road signs."
"I'm a recovering alcoholic. The dog gets between me and a beer."
"I have an irregular heartbeat and he's CPR certified."
"I'm color-blind. He tells me when the traffic lights change."
"I'm totally deaf in my left ear. Which isn't such a big deal, in the long run, but there are certain lifestyle issues I couldn't handle. Like hearing a car approach, you know, but not being able to tell which direction it's coming from. Or having someone behind me at the grocery store who wants to pass by me in the aisle, but I don't hear her ask. I got trained with Judge so that in those circumstances, he could be my ears."
I'm reading the book now, and I have a lot of free time. :)