What does pony boy mean when he says he drinks Pepsi's like a friend(p78)?

When Ponyboy says he drinks Pepsi's like a friend, he is expressing a sense of comfort and familiarity with the beverage, much like how he relates to his friends. It suggests that he finds solace and enjoyment in the simple act of drinking Pepsi, paralleling the camaraderie and support he feels from his friendships. This highlights his longing for connection and the importance of small pleasures in his life amidst the challenges he faces.