Well, this isn't my own story, but I thought it was a cute one.
A BSP sister who I met in Massachusetts was on a cruise in the Bahamas, and she was wearing a small Beta Sigma Phi crest lapel pin. A woman came over to her and gave the test for membership (look over your pledge manual if you forget!), and the two women and their husbands ended up hanging out together for the rest of the cruise.
Erica