[Orin] stood there, he says, hefting a cold clod, playing with the Velcro on his puffy coat, watching as the Moms, bent way down to me, hand reaching, her lowering face with its presbyopic squint, suddenly stopped, froze, beginning to I. D. what it was I held out, countenancing evidence of oral contact with same. He remembers her face as past describing. What is the meaning of the excerpt?