You might be a CFI if...
...your student asks you how you keep everything memorized (and accurate), and you honestly don't know. You can't even remember what day of the week it is (if the day of the week ends with a "Y," you're working).
...you have been using every creative way to get free lunch from the NIFA competition, and the fruits of your labor have been 3 (so far) of the best lunches you've had at work as a CFI.
...you've also used the time from the previous entry to stock the mini fridge, that you "do not" have, cleverly hidden in your office.
...during the short-field and power-off 180 landing events, you watch everything happen, only to wish that you had not graduated last spring so you could show these folks how it's done!
...tower calls you on the phone, asks if you are going to Wendy's, and asks if you wouldn't mind bringing them something back.