I can't believe its not butter face 

A girl who is so ugly you can't bare to look at her. But her face is actually not that bad.

Rob "Yo check out that huge b*tch"

Dimitri "Wow shes huge but her face isn't that bad"

Greg "Holy shit she's got an I can't believe its not butter face"

I can't believe its not butter face by Daga Jobin August 4, 2010

i can't believe it's not butterface 

A girl who you think has an unattractive face until you finally see her up close and are pleasantly surprised....

"Joe dude I thought that chick was a fuckin ugly cunt, but she actually had a I can't believe it's not butterface."

i can't believe it's not butterface by Kyle JC January 13, 2008