I'm expecting reader rage, so I'm going to finish this commentary quickly and then run. Which makes little sense, really, seeing as that rage won't occur until after I've posted this, so it really makes more sense to procrastinate, but WHATEVER.
If you look closely at last Friday's comic, it's pretty obvious that Luke didn't notice the earring. Of course, if you have to look closely, maybe calling it "obvious" is wrong by default? Well, in any case, Justin's earring was totally, and intentionally, absent from Luke's fantasy. Give yourself all sorts of praise if you realized that prior to reading this.