The Wit and Wisdom of the Ice Prince (aged 4 and 3/4)
IP: Mommy, why did you bring Nana's hat home?
Me: I picked it up when I took my coat off of the hook. It was by accident.
IP looks at me blankly.
Me: It was just a mistake.
IP: Oh! You mean it was unintentional!
The boy can't pronounce guitar (he says bitar), but he can use unintentional in a sentence.