This one is AWESOME if you're sarging strippers and models.
It's also completely true.
Style: Smile again for me.
HB: um, okay.
Style (to wing): See, she's a U.
HB:

?
Style: I dated a girl who wanted to be a pop star. And she
had a theory that people with U-shaped smiles were
perceived as unfriendly. And people with C-shaped smiles
were perceived as friendly.
HB: So what's a U then?
Style: A U is when your teeth go straight back in your
mouth (can add "kind of like a horse" if she's a SHB). A C
is when there's a big row of pearly whites in the front.
And to my ex, it was more than a theory. She actually got
her teeth surgically reshaped from a U to a C.
HB: No way.
Style: And she had me go look at pictures of like Christina
Aguilera, who is a U, and Britney Spears, who is a C. Look
at the cover of Us or any magazine, and you'll see that
it's always a C smile on the cover.
From here, me and the target start inspecting the teeth of
random strangers looking for the perfect C or U. It's fun.
Style