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2 definitions by Hey-La

 
1.
Something that is false or a sham. Also means a hairpiece or toupee.
1. who is that guy trying to kid? He's postiche.
by Hey-La August 22, 2006
 
2.
Literally translated destained fashion. Other translations: bad fashion (dress or behavior), bad taste. Used when you dont like were the person is going with their thoughts, and/or how the person is dressed.
Example 1:
Person A: They say there is a ghost that lives on this house.
Person B: Pish posh, your just trying to scare me.

Example 2:
Person A: Damn, you have a pish posh of clothes.
Person B: Your clothes are all sorts of pish posh.
by Hey-La August 08, 2006