Bowen's Cousin

"Bowen's Cousin" is a game Ben & Brinley play. They made it up a couple of months ago while we were grocery shopping.
Not sure why it's called "Bowen's Cousin" because it stands to reason that Bowen's cousin would also be their cousin...but it's a nonsensical game anyway...and it goes like this:

Ben: "Bowen's cousin is coming today like a stinky"
Brinley: "Bowen's cousin is coming today like a tree"
Ben: "Bowen's cousin is coming today like a pizza"
Brinley: "Bowen's cousin is coming today like a shirt"

And they laugh hysterically and go on and on....