Ok, now if you think about it "no u" really is the perfect comeback, because the other person can't really comeback after it's said, unless they have a reverse Uno card, but that's not that common, so the chances of winning a argument with "no u" is like a 90%. But there are people in the world that have comebacks that can overthrow "no u" so you're chances really go down to like 85%, but if you don't have any good comebacks "no u" is the perfect comeback.
Have a good day/night
Have a good day/night