A philly flim flam is when you take a ballon filled with nitrous and while pinching off the top of the balloon you apply a liberal amount of cocaine.
Then you do the balloon straight up your nose.
enjoy.
Hey bro ya wanna bang a Philadelphia flim flam?
Philly Flim Flam.
From the streets of L.A came the well known gangster Flimbs Nowlands, and after tearing up the mean streets with nothing but a moped and a carton of ribena, Mr Flimbs ripped a whole new hole in the urban slang melee with flimby roughly meaning :good, jolly good, excellent etc.
Local home boy turns to pimp daddy and says: "Damn did you see the game last night?"
Pimp Daddy replies:"No, was it whack?"
Home boy replies:"That shit was flimby yo!"