My son is very helpful with his baby sister. When every she starts to cry he says, "He's fussaling!" By he he means she as he is still mastering his pronouns. Plus our two children have a great awareness of not letting either of us eat or get anything done. Every time my wife gets something to eat (breakfast, lunch or dinner) my daughter seems to know and either wakes or starts fussing or wants to eat herself. Then if she is fussing my son will start with "Play with me please." And as soon as my wife is feeding the fussaling and I am playing with the boy, the cat will start with his standard "MEOOOOW!"
Here is a picture of our little angel doing what she does best when she is not fussaling: