I saw this thread in the AXO forum and thought it would be fun. I'll start.
You know you're a Pi Phi when...
-you start to love carnations more than roses
-you start collecting angels
-you get excited when you see an arrow on a building and wonder if the architect or his wife was a Pi Phi
-you want to collect as many badges as possible
-when in the shower you sing Pi Phi recruitment songs
Just a start! I had thought of a ton more last night.