Sigma laughed good-naturedly at Terezi's joke, and again at the Initiate's reaction. For the first time since he had been brought to Panem, he felt as if he were among friends, which was something to behold considering they had been fighting only minutes ago. It was true, however, that Sigma's tolerance of the deplorable actions of his friends was remarkably high, and he had never had many friends in his lifetime to begin with.

When he had recovered, he turned to the Initiate. "It's... a colloquial term for 'Grandfather,' or a man whose children have already sired children of their own. It has also come to mean one who is very old," he explained patiently. "It can be an insult if used to mock one's old age, but not a serious one, and I do not mind. I am old, Initiate." Sigma beheld him a moment affectionately. "There is a lot I have to teach you. Until then, it might take you some time to join our ranks, young one." He smiled at Terezi.