Top Definition
An extension of Peter7 where the girls are just as ugly but the guy scores her higher so he can appear to be a mack. In reality, he is just trying to show off and is in denial.
1) That's not a Peter9. She is as ugly as a peter7

2) Peter9, Peter7, they're all the same double baggers.

Peter: That girl is a peter9.
Mike: No Peter, that's a true peter7. Look at her FOBy dress.
by JasonInMiami September 13, 2007

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