I feel like the question that you're asking goes far beyond the realm of sports and it has a lot do with how communication works. Talking isn't just about communicating information. Communicating information accounts for very little of spoken conservation actually. Talking is mostly about reinforcing things like social norms, stratification, identity. If this is a subject that truly interests you, it might suggest taking some classes in linguistics and eventually sociolinguistics. It can be pretty fascinating, revelatory stuff. Or if you want to dive right into the deep end, track down "Ce que parler veut dire" (In English: Language and Symbolic Power) by Pierre Bourdieu. It's one of a handful of books that I credit with having significantly shaped my world view.