CoD MW SnD - Should you trash talk? When you are up 5 - 0? Then lose a round?

Call of Duty Modern Warfare Search and Destroy - We get trash talked by one player on the other team after we win our 1st round to get to 1 - 5. He probably regrets it by the end. My gameplay was atrocious for the most part during this game. I definitely got carried, but here are 2 moments that helped us turn it around and win.