You're the Shouter!

I bought a twenty-five cent glass of Kool-aid from these two kids on my way home from work today. They were both busy getting my Kool-aid (don't worry, I didn't drink it) when another person got pretty close to the stand. The one little boy said to the other one, "Thomas, hurray! Remember, I'm the pourer and you're the shouter!". Thomas was a good shouter: "Kool-aid, iced tea, twenty-five cents a glass!"