What's that??

Oh if I hear that question one more time I am going to scream. Do you know how many times a day I have to answer that question?? "Mommy, what's that?" My answer "that's mommy's book" Mallory's answer "ooooh" "Mommy whats that" " I just told you that is my book" "oooh", Mommy, what's that? I swear it's never ending! LOL She asks me that 100 times a day or more. And it can go on for like 10 min if I let it she will just go from one thing to the next asking what it is even if she knows what it is already. Gotta love a two year old!!