Here in San Francisco, locals are a rare breed. So just what makes you a "true local"? Wars have been fought over less. Here are 20 signs you just might make the cut.

1. You went to Camp Mather.

2. You've attended a baseball game played by Riordan, Serra, Mitty or Bellarmine.

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3. You make sure to include "as a local" when commenting on any local blogs.

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4. You're over 40.

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5. You went to Lowell.

6. You've used a fake I.D. at Eezy Freezy then used your punch card at Sub Center.

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Photo: Wes M. on Yelp.

7. You always bring a jacket no matter how warm out it is.

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Image: Photogism on Flickr.

8. You don't give a shit about the tech industry or anyone's stupid start-up.

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9. You took driver's ed classes with Mr. Lee at A-Safe Way Driving School.

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10. You shake your head in disgust when you overhear someone who's lived here five years hating on someone else for only being here two years.

11. You had your birthday party at Malibu Grand Prix, Raging Waters or Great America.

12. You've never called it "San Fran."

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Photo: Flickr user Five Wun O Clothing

13. You've been to the Excelsior.

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14. You shopped at the Serramonte and Geary Mervyn's locations.

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Photo: romleys on Flickr.

15. You drank 40s in the park with kids from Urban, Waldorf, Drew or Lick.

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Photo: c o l i n on Flickr.

16. The first time you saw a penis was in the bleachers at Candlestick Park.

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Photo: salim on Flickr.

17. You remember when Dianne Feinstein was the mayor. Maybe even when she was a supervisor.

18. Your friend's family home in the Mission where you partied in high school just sold for $1.6 million.

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Goodbye, sweet memories.

19. You played in the Police Activities League (PAL).

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Image via sfpal.org.

20. You can no longer afford to live in the place you call home.

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Photo by Bhautik Joshi.

Photo: Kris Robinson on Flickr.