He made a few Wookiee errors.
The supreme commander didn't have the balls required.
A yellow license plate.
Someone who doesn't have any expewience
They're a little Chewie. (Edit: Wookiee***)
A Chocolate Chip Wookiee.
He's such a wookie pilot. I had three Star Wars jokes prior to this. But none were any good.
He left his foot on the clutch.