- You have seen all 400+ or however many episodes there are.
- ... in fansub
- ... or better yet, in raw Japanese.
- ... and you understood it.
- You know the names of ALL the senshi's attacks.
- ... and the hand motions.
- ... and you can do them
- ... including some of those ridiculously long and impossible-by-real-physics spins.
- You wear a sailor fuku
- ... and you're a guy.
- You dress and act like Tuxie (=p) to try and impress the girls.
- You diet and diet and try to make yourself as thin as the senshi.
- You grow your hair out to ridiculous length, and put it up in meatballs.
- ... and need I mention it's blonde?
- You have a black cat named Luna
- ... and a white cat named Artemis
- ... and you got a little crescent moon tattooed on both of them.
- ... Every guy you meet "reminds you of your old boyfriend"
- You throw a party on each of the major character's birthdays.
- You know all the characters names, in both the original and dub version.
- You and all your Sailor Moon loving friends dress up as the cast for Halloween...
- ... and act out the entire series
- ... in Japanese
- You have actually made one or more of the senshi's weapons.
- ... and tried to use them.
- Whenever something bad happens, you burst into high-pitched tears
- You can easily eat about half your body weight or more at a single meal. (See also- YKYWTM Dragon Ball and Slayers)

More to come!