Meeting a girls mom Saturday

I got some questions for /lounge/ because you know a lot about girls

1. How should I dress? Casually, formally, semiformally?
2. Should I call her mother Ms. Surname or by her first name? Or just "Mom" as a joke?
3. If she asks me what I'm doing with my life, should I be honest? Because I'm doing nothing other than being a disgusting loser.
4. I'm worried that her mom will hate me. If I leave a bad impression, will I not get to see my friend any more? How can I leave a good impression?

Thanks lounge

Say 'Now I know where her daughter gets her fabulous tits from.'
The Mother will love you for it and the girl will be impressed at your off the cuff wit. Trust me, it's tried and tested.
 
Another one when introduced to her Mother is 'I didn't know you had a sister with awesome tits.'
Calling the Mother not old will make her think you are a sensitive young man.