Abbreviation and implication as to the lifestyle of one Pavan Hari. This is the same Pavan Hari who lives in "I-town" and rightly invented the phrase "cum dumpster." This is also the same fool who wrongfully took credit for the invention of the term "weaksauce."
A girl who is Pretty From A Glance....get it? basically wears a lot of makeup and dresses well to hide her ugly.
Jim: Dude, check out that chick!
John: Where? I don't see her?
Jim: There, across the street!!
John: Oh yeah she's hot....
(girl walks towards them, passes them)
Jim: Oh, wait, never mind, she was just a PFAG.
John: Yeah, total PFAG.