translation needed

What does this mean? Is it a joke?

Luke: ¡Tú traicionaste a mi padre y lo mataste!
Vader: No, Luke. La verdad es que fui yo la vieja pelotuda que te parió. Ven conmigo, acompaña a tu padre y conocerás el poder del sexo masculino.
Luke: ¡No puede ser! ¡Eso es imposible! ¡Yo nunca cambiaré de sexo!

You have betrayed my father and you killed him!
No, Luke. The truth is that this cretin who who gave birth to you was me. Come with me, follow your father and you will know the power of the masculine sex.
It cannot be! It's impossible! I will never change my sex!

Beware. I'm not native in any of this two languages, there can be some minor errors.