One who nominally lives and/or works in Philadelphia, but c'mon, who do they think they are kidding. Often, but not always, used as a synonym for New Yorker.
Philadelphian: Hey, there's a great new restaurant in Old City. Want to go check it out?
Fauxladelphian: Where?
when the front of a building (let's say usually an apartment complex or a house that is now a rental property) is designed to look imposing or grand when viewed head on, but when viewed critically the rest of the building doesn't live up to the first impression.
Sure, the place I thought about renting had a nice fauxcade with decorative window guards, brickwork, flashy cornices, and elaborate drainspouts, but the sides of the place were covered in cheap, cracked vinyl siding.
Food items marketed as wasabi, but having little or no actual wasabi, which is rare and costly. Horseradish and vinegar are used as substitute flavors and natural coloring (light green) is added.
Bummer! I bought this expensive wasabi mayo, only to find that it has almost no real wasabi. Should be called fauxsabi, man.
When someone who isn't Canadian a) Celebrates a Canadian holiday to get off work (e.g. Canada Day)
b) Talks with a pseudo-Canadian accent (e.g. Minnesotans)
c) Pretends to be Canadian overseas to avoid the hassles of being an American (e.g. George Clooney's character in Syriana).
John: I can't come into work tomorrow so I can celebrate Canada Day.
Pete: Oh yeah? You're not even Canadian! More like fauxnadian! I'll see you tomorrow.
John: Let's get some beers, eh?
Pete: Stop being a fauxnadian.
Pierre: Stupid American!
John: Oh yeah? I'm Canadian you stupid frog!
Pierre: Well then let me get you a baguette!