mother-in-law unit
n.— «In Colleyville, owners can buy a small, adjacent room, often called a “mother-in-law unit” or “au pair unit.” Some town houses in Bedford and North Richland Hills have front porches.» —“Some accept town houses, others not so much” by Sarah Bahari Telegram-Star (Dallas, Texas) July 8, 2006. (source: Double-Tongued Dictionary)
Further reading
A Dallas, Texas, woman and her friends often use the expression All the things to mean something like and whatnot or as a way to signal a kind of mutual understanding, suggesting something similar to the phrase you know. This sense probably comes...
Catina from Abilene, Texas, says her young daughter and her friends fondly refer to each other with the word sigma. The slang terms sigma and sigma male were originally used in the manosphere to denote “an outsider,” and carried a...