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Anyone that is indescribable/undefinable. Or so utterly bizarre that boneface is the only term that can be applied.
Birgitte: Yo, did you see that gurl?
Kelcy: No what she do?
Mia: She didn't wear her flip flops in the communal shower at our sorority.
Kelcy: Wow...what a boneface!!
by The Corlebone November 23, 2008
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