[So much for avoiding talking about it directly. He's not surprised, but pauses to think about how to respond. After thinking for a moment he laughs softly and rubs at his neck a bit.]

B gave me that name. Told him I wouldn't be a Robin and he had to come up with something else. Didn't get it first myself, would have thought it was a joke if it wasn't for the fact he's terrible at them...but I kind of get it now. Maybe. Signals can mean a lot of things, but usually it's about guiding people.