Rory: "Jess, my mother is a great person. She's also my best friend in the world, so if you care about me at all, you will take that into consideration and you will be mildly polite to her."
Jess: "What makes you think I care about you?"
Rory: "I don't mean care care, like care. I mean if you like me at all... not like like. I just mean that if... if you think of me remotely as the sort of person that you could occasionally stand to talk to, then you will try to get along with my mom, that's all."
Jess: "Okay."
Rory: "Okay?"
Jess: "I can't guarantee that it'll work, but I'll try."
Rory: "Thank you."
Jess: "You're welcome. I should probably get back to work."
Rory: "Right. Sorry, go ahead."
Source: youmissedthewholeshow