Parker purses her lips, only to make a rather rude noise: half fart / half raspberry. Clearly, that was an unsatisfactory answer. People are supposed to know what they are. She's a thief. Hardison's a hacker. Steve Rogers is obviously a nefarious spy. Root is interesting. That's how people work.

"Why do you look like that?"

Maybe he didn't understand the question, so she'll get even more invasive, in both her language, and in his personal space.