You're a fan when these things happen when you visit the Rock and Roll Hall of Fame Annex in NYC:
-You "Aww" when you see this little boy (who was obviously VERY into the Beatles) looking at all the Beatles things there with an amazed expression on his face. Not to mention he was also singing along (loudly and obnoxiously haha!) to Beatles songs that would play in there.
-You freak out when you see a girl just a little older than you in a cool Beatles shirt walking around.
-You are very happy when in the gift shop, a man allows you to take a quick picture on your phone of the framed picture of Paul 'flipping the bird' (and it is now your phone's background).
And last but not least:
-You cried in the John Lennon New York years exhibit. In front of other people. When you usually never, EVER cry.