warm shell
n.— «Although there are no strict definitions, “cold shells” are generally facilities where tenants may have to install bathrooms, elevators and air conditioning. But that’s not as bad as an “arctic shell,” which doesn’t have much more than a roof and exterior walls. A “warm shell” at least has bathrooms and elevators. “Tropical shells” offer amenities beyond that.» —“So, if They Say a Building Is a Real Hellhole, Go for It” by Sheila Muto Wall Street Journal Mar. 4, 1998. (source: Double-Tongued Dictionary)
Further reading
A Kentuckian named Sheila moved out of state for several years, but now that she’s returned to work at Western Kentucky University, she finds that many students no longer seem to have a stereotypically “Southern” accent...
Sheila in Charlotte, North Carolina, remembers her father used to ask the kids if they needed any geetus, meaning “Do you need any money?” This word for money is spelled several ways, including geedus, geetis, geetas, gheetus, and geets...