I think the snapping is so funny. I didn't see this until I started advising. My chapter had us yell "Ditto" if we agreed with anything so we wouldn't get up and repeat the same thing. Any chapter meeting was peppered with enthusiastic "Dittos" all night which sometimes made for a loud group. I think it was a tradition left over from the early years since we certainly weren't still using Ditto paper. We NEVER snapped!
