There are all these generically pretty girls--you know the type. They have the look--stylish (or at least presentably pretty) clothes--even if it's their only thing like it in their wardrobe. They seem pretty enough--they're the kind of girl that asks way too often while peering intensely into the nearest mirror, calling over her shoulder to her boyfriend (because she's never a lesbian, and if she's bi, it was just for that threesome once--which doesn't count), "Do you think I'm pretty?" and he'll answer all exasperated like he always does, "Of course, yes!"
These girls are the apple pie smile of Middle America yet when you look close, you'll notice something's off--with all of them. (They often travel in packs so scrutiny of many at once is quite possible.) One will have overdyed hair that does not match her skin colour, another's nose is too big (and with a slight bump--oh, how she hates looking in the mirror), another has only old hand-me-downs and cheap, unstylish clothes--but they all look very pretty, very "American" pretty--at first glance, but you soon see the truth:
They're merely average.