Nhfulmer, maybe for a myrid of reasons they could not join as an undergraduate member, but still wanted to attain that feeling with a certain Org. that they became friends with and beleived in!
Check the Alumni Thread.
Manytimes, those AI members become very improtant parts of their respective Group, Frat./Soro! Some have even become National Officers.
One never knows for what reason, but they do want to be there.
If ones nose gets to high in the air, they catch a cold and the nose runs, ooooh snotty nose!