«'Killer'...» [He repeats it flatly, quizzically, and cocks his head to the side.] «Is that another way to say cool?»

[Needless to say, he doesn't know the first thing about fashion or what looks good or not. Really, he could actually use the advice of a Stylist but doesn't know it.]

«So you really just like the dressing up bit. Is that something that's fun for humans to do?»

[Again, he's fashion challenged and doesn't understand how dressing up is something that can be enjoyable.]