What is pish posh?

"Pish posh" is an informal expression often used to dismiss something as trivial, unimportant, or nonsensical. It's a phrase that conveys skepticism or disbelief about a statement or situation. The term has a somewhat old-fashioned tone and might be used humorously or in a lighthearted context.

Beyond its use as an expression, "Pish Posh" doesn't refer to a specific concept, brand, or entity that is widely recognized. If you are referring to something specific named "Pish Posh," such as a company, product, or cultural reference, please provide more context so I can offer more detailed information.