Most of these I thought of myself, but some I used from other sites.
-You have seen the play at least once a year, if not more.
-You are in the audience and are able to offer to play any of the roles because the actor and their understudy are both sick and unable to perform.
-You can connect any bila mpangilio word with POTO. (Ex: The word sister makes me think of my sister, who sang Masquerade in her high school chorus and also took me to see POTO for the first time.)
-You go out somewhere in your Phantom costume and it's not Halloween.
-Your family knows all the songs from POTO, even though they have...