This quote comes in Act 3, Scene 5. It's a great scene because audiences get to see a number of character changes. We first get to see Juliet exert some of her own free will. She tells her mother that she will not marry Paris. Instead, Juliet claims that she will marry Romeo. Lady Capulet doesn't freak out or berate her daughter. We get to see the same calm Lady Capulet, but she does hint at the coming storm. Lady Capulet tells Juliet to tell Lord Capulet and see how he likes her decision.
"I will not marry yet. And when I do, I swear
It shall be Romeo, whom you know I hate,
Rather than Paris. These are news indeed!"
"Here comes your father. Tell him so yourself,
And see how he will take it at your hands."
Lord Capulet doesn't take the news so well. He goes from being the kind and loving father that we saw much earlier in the play to a screaming mad father that insults his daughter and claims that he will drag her to her wedding if necessary. When he tells Juliet "out" followed by an insult, he is literally trying to have Juliet get out of his current sight. He's so mad at her and insulted by her choice that he calls her anything other than her name or "my daughter." Calling her "baggage" is a personal favorite of mine because it really sends home the message that he considers Juliet a burden that must be dragged around until it can be unloaded or handed to someone else.