Tina Fey -- So That's Where the Scar's From

Tina Fey is finally talking about where that scar on her cheek came from -- and it's anything but funny.

She's never told anyone how she got it, but in Vanity Fair, Fey and hubby Jeff Richmond say it was the result of a "mystery slashing incident" which happened when she was five. "It was in, like the front yard of her house, and somebody just came up, and she just thought somebody marked her with a pen."