Where does she learn these things?

Clara is amazing, she is so darn smart and I have no idea where she picks these things up! At dinner tonight, I made her dinosaur chicken nuggets. Always a big favorite. At dinner tonight, she even said, "This chicken is good!". Anyway, she bit the head off of one and she said, "I killed him!". I immediately called Matt and asked him where the heck she learned that because I did not teach her that! She is constantly asking, "What's this? What's that?". It's tiring!