Despite knowing who Sirius is, he'd forgotten that Sirius comes from a different world than Cisco does, one where, despite having their own level of prejudice, racism doesn't really exist. Cisco's not even sure if the Harry Potter novels had a concept of Hispanic people, but it's clear that Sirius doesn't understand the joke Cisco had been trying to make.

"Well, if it's going to be like Barry's it'd be called the–" he starts to say, then stops himself, again realizing that Barry might not be telling people he's the Flash, and maybe Cisco shouldn't be advertising his own powers either, as generally useless as they are here.

"You know, my name doesn't really sound like a very good drink name, come to think of it," he says with a little laugh. "Yours, on the other hand, would make for a great one. I would totally order a Sirius Black."