His tranquility is interrupted by a growingly familiar buzz of general irritation. He does not quite recognize GLaDOS until she speaks, and he actually gives himself away with a little flinch at the implication that he has done something wrong. "I --" he starts, about to say 'I am,' only to be headed off by a sneeze. The sudden violence of it gives him pause; it is very unusual for that to happen. "I was," he admits warily. "It is a well-made place."