Because they got Chewbacca
Wookiepedia
A wookiee talkie.
He's just a wookie!
Wookieeleaks
WWWRRRRRRGWWWRRRR!
Wookie Goldberg
He's such a wookie pilot. I had three Star Wars jokes prior to this. But none were any good.
Because Chewie was making too many wookie mistakes!
A Chocolate Chip Wookiee.
He made a few Wookiee errors.
A Chewie
Discus
A Wookie mistake!
They're a little Chewie. (Edit: Wookiee***)
R2D2. All of his lines are bleeped out.
Through the windu!
Because as soon as they start they get fired.
Because they knead dough.
Less than twelve parsecs.
She was looking in Alderaan places.
Because the Nerf hurt her.
THE PUNCHLINE OF THIS JOKE HAS BEEN CENSORED BY THE GOVERNMENT OF THE PEOPLES REPUBLIC OF CHINA, PLEASE REMAIN CALM WHILE WE WILL DEAL WITH THE OP IN A CIVIL MANNER.
Because it was a lame joke.