Where do they get it?

My daughter, who is prone to a few bizarre behaviours, has recently started saying "It's AWESOME!" "Isn't that AWESOME, Mommy?" I have no idea where this came from. It is sort of funny and slightly disconcernting to me. I suppose i should pay very careful attention to the environment around us for clues, since she is apparently going to pick up the oddest phrases from goodness only knows where.