You don't- [He begins, but is cut off as she walks off.] Jesus Christ. [Marty digs around in his pockets for some cash, sets it on the counter as a form of payment, and follows her to one of the booths, forgetting about his own burger in light of all of that.]

Ok, so, here's the thing. You can't do that. I don't want to get thrown into superhero jail or whatever it is here for stealing a friggin' milkshake.