Back in the day, I believe the men would actually give their pins instead of "dropping" a girl his letters (lavaleir). I believe that's what my father did to my mother (sigh).
I guess in a way it's (dropping) kinda like a promise ring...only in a guy's eyes, more serious!
Good Luck and definately consult a brother on the proper proceedure!
Hootie
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What do you get when you cross and Alpha Omicron Pi and a Sigma Phi Epsilon? A beautiful Chi Omega!!!