Oh my. On stump, McCain addresses "My fellow prisoners"

At a rally today, John McCain addressed "my fellow prisoners." I mean, it's kinda feels that way sometimes, but could that really be what he meant?

"You and I together will confront the $10 trillion debt that the federal government has run up and balance the federal budget by the end of my term in office. Across--across this country, this is the agenda I have set before my fellow prisoners. And the same standards of clarity and candor must now be applied to my opponent! You know, we've all heard what he's said, but it's less clear what he has done, or what he will do."