They did?

[ robin stops immediately. all of a sudden, this is a very serious situation. he immediately turns, looks at six's ears, and tries to get a good look at them from as many angles as he can. ]

W-why would you hurt them?! Or did someone else when you were... um... doing what you had to do...?

[ he begins to dig in his pockets. maybe he has some kind of handkerchief? or some hand sanitizer, or something to help... ]

I'm not a doctor, but there seems to be plenty of them around...!