"No? Keep it that way, if you can. They're boring and they smell bad... kinda like my brother."

A casual grin, intended to be disarming - he almost certainly doesn't mean it, and joking's generally a good way to get a friendly conversation going, right? It's that or lie, in Gabriel's experience-- or, well, definitely lie and probably joke too, generally at someone else's expense, which may explain why he doesn't have a lot of friends. Still, Oliver doesn't need to know what a dick he actually is, not just yet.

"So, who're you?"