It's definitely scary and, stuck in place where he is, Joker has no idea what he should even do. He doesn't even have a frame of reference. People learn how to be in a relationship by copying their parents, he figures, but, well....

Yeah. No frame of reference.

Honestly, he doesn't even know how to finish this conversation, ears flicked down as he bites the urge to fidget. "Well," he says at last, "I guess that's it." Shit. He should.... say something else. Anything. Unfortunately, all he can think of as he looks down to his right side is...

"....Wanna look?" Wait, that also sounds weird. Shit. "I mean... Figure we should be equal, if we're doin' this, so...."

He got to see Ginko's sort-of-empty eye socket, so it's only fair that Ginko gets to see his sort-of-empty arm socket.