Dill is lying so that he is able to stay in Maycomb. He admits that he ran away to Maycomb so that he was able to spend time with his friends. This is because he is not getting enough attention from his mother, so he is lying so that he will get attention. Dill also has a very active imagination, which contributes to his lying. He does not like the way that things are in his life, so he fabricates a better life for himself. We know that Dill is not receiving enough attention at home because he is sent away to spend every summer with his aunt.