I never heard it before and never heard it since. When we made fun of the RA for the terminology, his response was something like well that seemed more logical than you had a full hot tub in there, which I guess I agree with.
No 220 hookup, we definitely did not have it code compliant, essentially separated the water pump from the rest of the control panel (heating element, lights etc) and ran two 120 lines (cut and spliced extension cords) to two different outlets that we figured out were on different breakers after we knocked out power a few times.
Filled the tub from the shower, unscrewed the shower head got a double threaded fitting so you can ***** a hose onto the shower spout if that makes sense, turned on the shower and ran it straight to the tub.
to empty, the tub had a valve at the bottom, we hooked up a hose and just ran it out the window so it flowed down the side of the building. Got it out same way we got it in, took door off the hinges, put it on its side and pushed it down the hallway. Also i distinctly remember a weird elevator, there were like 3 but one of them had two doors at the front and back. i think the second floor you would like walk out of the back of the elevator and we could only use that one because that second door gave us like an extra foot of clearance.