go grassy knoll on someone
v. phr.— Note: To indulge in talk or thoughts of a possible conspiracy. «It’s probably nothing, and God knows I don’t want to go all grassy knoll on you. Just passing along the latest rumors.» —“Paranoia Watch” by Kevin Drum Washington Monthly: Political Animal March 31, 2007. (source: Double-Tongued Dictionary)
Further reading
When Bebe, a non-native English speaker in Charlotte, North Carolina, moved from England to the United States, she learned that a minor illness isn’t called the lurgy but the crud. In the 1700s, lurgy was used jokingly to refer to “a vague medical...
Critters, co-workers, and clothes: What do you call your favorite mixed-breed dog? There are Heinz 57 mutts and Texas brown dogs in the U.S., while in parts of the Caribbean they’re called potcakes and coconut retrievers. Plus, among firefighters...