for zahnin 's part , he did n't even wince but lay on my bed with pillows i 'd shoved under his head , one arm bent , hand behind his head , chatting amiably through the whole thing to bain who was standing at the head of the bed , arms crossed on his chest and one ankle crossed over the other in a casual warrior pose which did n't fit with what had become a minor medical procedure in a primitive examination room .