What does “A.D.” signify? That commemorates an inmate of this lunatic asylum we call Earth who was nailed to a wooden cross by a bunch of other inmates. With him still conscious, they hammered spikes through his wrists and insteps, and into the wood. Then they set the cross upright, so he dangled up there where even the shortest person in the crowd could see him writhing this way and that. Can you imagine people doing such a thing to a person?