Final answer:
Leroy suggests that Rhoda talks excessively, which prevents her from listening and allowing others to speak, contrasting himself who does get to hear what people are saying.
Step-by-step explanation:
In the dialogue, Leroy suggests that Rhoda talks a lot in comparison to himself. He states that Rhoda is gabbling all the time, which implies that she speaks excessively and perhaps rapidly, making it difficult for others to get a word in. Consequently, Leroy indicates that he is different by implying he is more likely to know what people are saying because, unlike Rhoda who is too busy talking, he has the opportunity to listen.