My buddies passed in a single file and shook his hand as I introduced them. They were so polite I almost laughed. “How, there, Grandpa,” and even a “How-do-you-do, sir.” “You look fine, Grandpa,” I said as the guys sat on the lawn chairs or on the patio floor. “Hanh, yes,” he agreed. “When I woke up this morning, it seemed the right time to dress in the good clothes. I knew that my grandson would be bringing his friends.” What does the dialogue in this excerpt suggest about the characters?