FOP stands for not only fucking old people but also Fear Of Parents.
Example: person #1: Hey did you hear jack has FOP?
person #2: What is that?
Person #1. It stands for Fear Of Parents. every time he tries to talk to a parent he shits his pants
Fresh off the plane. Points to people who are not from a country who had to emigrate over. Act like a Foreigner.
Syn. FOB(Fresh of the boat)=FOP
Now these days, people now come from planes not from boats.
EX.Yo he is a FOP.
An fancily dressed gentleman, also called "dandy"
Zorro's disguise as a fop was brilliant.