This isn't as likely to be as ha-ha as some of my CC entries, but I certainly have fond memories of attending 13 outdoor summer Dead shows (including a good one 9 years ago tonight). Those provided some worthy strip fodder, what with the music, the searing heat and drenching downpours, the streakers and births and women wanting the shirt off my back, not to mention being part of the final straw in the condemnation of a stadium.
My favorite summer dead was the 20th anniv. summer solstice weekend - or as much as I remember.
"Jelly-belly gigglin, dancin and a-wigglin, honey that's the way I am!" Janice the Muppet