It's an interesting time in language acquisition. A few days ago my daughter said she gets cold after drinking apple juice, "It gives me juice bumps."
Today she said she was going to take a "mouse nap". The other day I told her what a catnap was - as shown by her ten minute nap in the car. Today she decided she was going to take an even shorter nap, thus the mouse nap.
It was in fact such a short nap that I apparently missed it while checking an e-mail.