Trivia: Small children have told Billy Bob Thornton they like the film - he was reportedly "stunned" that parents would allow their kids to watch it.
Trivia: Billy Bob Thornton has said he really was drunk during some scenes.
Trivia: The first lady (with the dark hair) that accepts the photo from Marcus is none other than Alex Borstein, the voice of Lois on Family Guy.
Answer: My guess is that when he was a child, he was molested by a man dressed as Santa Claus, and ever since then he has been holding a grudge against people dressed as Santa Claus. You can see him staring angrily at Willie in the bar even before Willie notices him.