"Do you... You don't really do 'hobbies', do you?" What did he expect her to say, that she's gotten big into crochet? "What did you do whenever there wasn't some... galactic emergency or whatever? You couldn't do whatever it is that Green Lanterns do all the time, right?"

Speaking of which: "What do Green Lanterns do?" From bits and pieces from their conversations, all he's gathered is that the Lanterns are some sort of... space police force? Collection of interstellar superheroes? Ragtag but lovable band of energy-wielding vigilantes? Something like that.