What verb can describe this action and the associated attitude, please?

[Mehrgan]

Hi,

I wonder if you could kindly help me find the right verb, or any related idiom/expression.

This guy goes to a party/club where he doesn't belong, because he's coming from a lower social class. So, he's trying to come across as a classy and well-educated person by, say, putting on a fake accent, talking about his being to posh places, etc. What form of verb/idiom/expression could be used to express his action?

Is there anything including the word 'class'?


(He's putting on an act?!)

[mkey]

Hello.

Well, my vocabulary is limited, but in this type of scenario I'd use nouns like "poser" or "wannabe," verbs like "posing" or expressions like "putting on a facade."

Some with a better answer will probably be here shortly :)

PS: "wannabe" should be taking like a half joke, not a serious suggestion.