sister wife
n.— «Wives married to the same man call themselves “sister wives.” The multiple children created by these families call all of the women “mother.” That’s part of the reason Texas is DNA testing the children—because they’re still having a hard time sorting these families out.» —“What’s Up With The Prairie Dresses?” by Don Teague MSNBC Apr. 23, 20080. (source: Double-Tongued Dictionary)
Further reading
While reading Great Expectations (Bookshop|Amazon) by Charles Dickens, a listener in Arlington, Texas, is surprised when one of the characters inherits some money, which Dickens describes as a cool four thousand. Were they really using cool that way...
Suzanne in Tucson, Arizona, says her mother used to say the following to her quickly: Will you? Won’t you? Can’t I coax you? Aw, c’mon! You said you would! You think you might? You promised me! Won’t your mama let ya, huh...