2)You look upon other cars in traffic with you as fellow aircraft on a taxiway.
3)Your wife or girlfreind warns you of a car entering an intersection ahead to which you respond "Roger, I have the traffic in sight."
4)You delight your little niece by painting up a 747 as the personal aircraft of her favorite Disney Princess and flying it to whatever destination she picks whenever she comes to visit.
5) Everytime you see an interesting aircraft in the news or on some TV show, you look for an FS version of it.
6) you've probably put in more flight time then most "real" pilots.
7)You've pulled stunts that would have gotten you killed or arrested if you had tried them in a real airplane.

9)You sometimes give your "Virtual" passengers an in flight commentary on the scenery your passing over and thank them for flying with you at the conclusion of your flight.
10) Your aforementioned niece also likes to play airline hostess and can give the entire pre-flight safety message thanks to you.
