I almost chose persuade, but you can't directly defend youself with persuade. So I chose force choke. You can persuade with Force Choke:
You: I want a better deal, you will give it to me.
Car Salesman: I don't think so, this is the best deal we have to offer you.
Y: You're not telling me the truth.
CS: Uhhh sir, I . . .
Y: <Force Choke> Give me the damn car for free!
CS: gurrgle . . . crack . . . choke yes . . . . . master . . choke gurrgle .
I want to charge up all the womens loading ramps!! After I get my free new car! a lightsabre would be uber cool but it would be too obvious in day to day life. But Choke wouldn't.
CS: bbut he used a Star Wars power on me!
Cop: ookkkkkkkkaaaayyyyy, Why don't you come with me? I'll take you to a nice place were people will take good care of you . . . .