On The Blacklist episode, an character says this for another character:
My name is Asher Sutton. What's yours? And please, don't tell me it's Wainwright,because that is about as phony as that watch you're wearing.
I know that he's trying to say which his name is as fake as their watch. but my questions is what would be the meaning "about" in this context, is it something idiomatic?