Kids say the darndest things

So the in laws are here. And when anyone coughs or sneezes they always say bless you. So when Blake was coughing and they said Bless you or Sa Ha (arabic for bless you), Sydney said no its, Cough you. We just had to all laugh because we dont know where she got it from. I asked her who says that and she said, I do. So she totally made that up on her own. And now she's always saying Cough you.