raincoat crowd
n.— «In defense of unique Mensa activities such as the dirty adult movie group, Hume said members who attend have “no prurient interest,” they’re “not the raincoat crowd.”» —“Mensa—Those Lusty, Zestful, Devilish Brains” by Alison O’Neill Washington Post July 17, 1980. (source: Double-Tongued Dictionary)
Further reading
Skip, a sailing enthusiast from Gainesville, Florida, has been pondering radio protocols, such as the distress signal mayday!, and sécurité, which announces any of various warnings. There’s also pan-pan, repeated three times, a call that...