Why is Chewbacca retarded?
He's too stupid to understand that Lando was saving their asses in ESB and tries to kill him.
In Shadows of Empire he constantly interrupts Leia and Xizor when they were so close to getting down with it after Leia tells him to gtfo.
He makes so much noise and doesn't know when to shut up. One of the most unlikable characters in the series; closely followed by Hondo and Jar Jar.