Emily could only raise an eyebrow when Luka brought up the fact that she had described him as a frat boy. She could immediately tell that the sounds of people gasping was from his Eidolon. She listens to Luka continue speaking, telling her of how he helped Ashley (which brought more suspicion to him), and how he expected her to immediately change her mind about him. 

Words...could not express her feelings about the absurdity of this moment right now. She had to restrain herself from rubbing her face and potentially getting sweat in her eyes. She honestly felt secondhand embarrassment from how Luka was behaving, but she doubted he felt any embarrassment right now.

After a beat of silence while Luka was in his pose, expecting praise to be lobbed to him, Emily finally speaks! Her tone is deadpan in disbelief,

"...You mean...to tell me...that you came [I]all the way here[/I], helped my roommate so that she is in a position of being [i][u]indebted[/u][/I] to you, [I]just[/I] so you can tell me, [I]only one person out of the entire world's population[/I], that you are not a frat boy?" 

[I]This guy needs a reality check....[/I]

She soon answers him, clearly not impressed, "Yes. You are still a frat boy," 

She sighs and she brings out her phone out of the bag with her journal and pen inside, which had been tracking her run, and proceeds to inform him after bringing up the dictionary entry, "Oxford Dictionary: A frat boy is a young man who behaves in a boisterous or foolish manner considered typical of members of some college fraternities,"

She then puts the phone away and she asks him seriously, "How many parties have you gone to this week? This month? You've already boasted of connections and wealth, but what skills do you bring to the table? What exactly do you want to do in your life as a career? What are your aspirations?"