Oh, Desperate. You're not talking about me, are you?
I am the Queen of You. I say "YOU!!!" all the time. It is awful. It annoys the crap out of people, I can tell. I am working hard on stopping. The bigger the point, the greater the pressure, the more "You!"s you will hear out of me.
Allow me to explain.
Back when I started playing 2.5 tennis, I and everyone I knew at my level was mute during points. As I improved and played more doubles, I realized the benefits of communicating during points. I started saying "Got it" and "You" some.
The thing that really got me yelling "You" a lot was when I started playing the net more aggressively. When I am at net, I am thinking one thing: That's my ball. I try to be as ready as I would be if I were playing solo. I try to see the ball as mine the way I would see it if this were a two-against-one exercise in a drill class.
In my mind, all balls my opponents hit are mine. That is my Default Setting at the net.
When I can't reach one, I say something. I could say what I'm thinking, "AAAH! I was really hoping to get that one, but I can't reach! Partner, I need help!!" Instead, it comes out as "You!!!" Even if the ball is hit to my partner's alley, there was something about the rally that had me thinking, however briefly, that I might be able to get it.
As I said, I am working on this, and I am getting better. If a ball is up the middle, I am trying to shout "MINE!" as it leaves my opponent's racket and then own the ball. But I will still say "You!" if there is any question.
Between you, me and the wall, I think it helps my partners some, even if it annoys them. I tend to be all over the place at the net, and I think it causes some partners to hesitate because they are not used to this. A "You!" -- even for an obvious ball -- causes no harm and perhaps inspires my partner to know that I will not be getting in their way.
This time.