None are mine, but here goes:

Spoiler Alert, click show to read: 
You know that you’re French…

- When you think that French fries aren’t French at all, but from Belgium

- When you think that yogurt is from Bulgaria

- When you call a baguette sliced in two and filled with a steak and French fries « un sandwich américain »

- When you think that Coca Cola and Mac Donald’s are “just for kids”

- When you consider a Coke with whisky as a suitable drink for teenagers

- When a President becomes popular after it has been proven that he has several mistresses

- When you can tell the political views of anybody by the cheese he / she prefers

- When you call an 80 kilometer drive “a journey”

- When you’re able to guess the nationality of a tourist by his clothes

- When you think that a good evening meal with friends must have at least one big argument

- When you can't think of translation in French for TMI 'Too Much Information', because, I mean really, do you ever say too much?

- When you think that a glass of white wine at 10 am is good for the health

- When you call "an affair" "un flirt"

- When you go on strike to preserve the right to go on strike

- When Lafayette means “big store with affordable sexy lingerie” to you

- When you think that Quebecois are “courageous and strong people with a funny accent”

- When you think the only food outside France that’s acceptable to eat is Italian

- When you say “That’s the worst haircut I’ve ever seen” when you meet somebody with a bad haircut

- When you only see a movie after having read ten different critics who liked it

- When you think that you know the USA when you have traveled one week to New York, one other week to San Francisco

- When you consider an air rifle as a lethal weapon

- When you think that “un libéral” is a neo-con and “un républicain” is a Democrat

- When you think that saying “You’re right” is a sign of weakness (you should say “You’re not wrong”).

- When you’re used to seeing pictures of naked, or halfnaked women on billboards

- When you can’t think of a translation in French of the sentence “That's you’re opinion, and I respect that”