I was always mystified, as a kid, at the external classrooms that got called ‘portables’.
‘Portable’ means one can pick it up and move it.
(a) these classrooms could only be picked up and moved by loading onto trailers, which I didn’t know then,
(b) they never did seem to move; the same portables were around forever at my school.
The only neat thing about portables was getting to walk outside to get to them, being outside not at recess hour! 🙂