How (not) to smile, via this link.
Great. Now I'm paranoid about my smile.
Doesn't help that when I tried to ask my sister about it just now, all my pent-up anxiety from perusing countless images of friendly fangs and ecstatic eyes decided to explode suddenly into a fit of maniacal laughter. Ah well. I guess it can't be helped now...
In any case, Mr. Meyer's right. Unless you're really hoping to snag that lead role in a local horror film, please -- please -- for the love of all that lies this side of uncanny valley, remember to smile with your eyes.
Key word being "with".