Brian: "Cow cow cow."
Me: "Cow? Where's the cow?"
Brian: "Me cow."
Me: "You're a cow?"
Brian: "Moooo" giggle giggle giggle
He was seriously laughing his butt off with a gleam
in his eye after saying this.
Brian's first joke?
Or even more astounding:
A new pretend play skill?
He has NEVER pretended to be anyone (or anything) before.