Our 2.5 yr old son says that "It's darking outside". He put the words "It's getting dark outside" together and came up with "darking".
Our 9rd old daughter used to say that her daddy was a "dark" sleeper since she'd heard that I was a "light" sleeper. Of course, she didn't know that the correct term for the way her daddy sleeps is actually "sound" sleeper.
It's so precious some of the things they come up with that you remember years later. Insiderart, the broccolli thing is hysterical!