My middle daughter has just pledged a sorority. I am not entirely sure which one, but I do know that she is a proud member of either Delta Theta Lambada or Beta Carotene. She is eager to carry on their sacred traditions of clog dancing, beer bongs and CTEs — commemorative T-shirt events — which are defined as parties, gatherings or social events sufficiently important to justify preserving on a T-shirt and 19,212 cell phone photographs.

If you have college-age kids, you know this species: They’re identified by somewhat faded T-shirts that say “Beta Carotene/Delta Theta Lambada Beer Bonging and Clog Dancing Marathon for Ronald McDonald House, December 8 until… ” Generally, adults — and law enforcement agencies — are not allowed to see the pictures.