A poser is someone who tries to fit into a profile they aren't. People who try to give off the impression that they are one thing when they are really another.
Also, a poser can be one who says they can do something that they can't.
Or more commonly, a poser is someone who, when doing something successfully, takes more than enough credit for it.
* These videos are coming directly from Youtube, they may or may not be most relevant to the word "Posers"
What is Define Dictionary Meaning?
Best thing is, its free and you can even contribute without creating an account.