Wait, WHAT?!
That's one of the other hats? You have to be fucking joking... I...
I really don't know whether to be amused or horrified at how out of it Phil's hermit life has made him. He ACTUALLY saw that and thought it was a good idea. This is worse than the Holocaust hat, because Phil could be tone-deaf like that, but this is beyond what should be on the list of things Phil doesn't recognize as best avoided.
And dear god does he look retarded in that get-up. He MUST be thoroughly desperate if he's tolerating us dunking on him so fucking hard for looking like more of a jackass than any of the muppet streamers he's insanely jealous of. And you do, Philroach. You look dumber than Ninja ever could, especially with that webcam from 2008.
Given the number of other things that Phil gets surprised by despite having no business doing so, I can totally buy him forgetting all about any awareness of what he is until he gets confronted with it.
Especially since Phil spends more energy denying things than it would take to alter his circumstances.