there must be limits, but so far I haven't found one. I even, in my fairly drunken state, remembered the Russian for 'do you mind if I use your toilet', while nipping into a bar in St Petersburg on my merry way back to Ligovskii Prospekt. I may have been born with it, but I don't think I was ever drunk as a child.
[flerdle] It would be interesting for sure. I've been fairly close to the equator but never below it [see? I still see north as 'up' and south as 'down'] Can relate to everything you said earlier about observation, map usage, etc. Even as a child I had a compulsion to know where I was placed and was first to a floor plan, street plan or map - it made my day when faced with one of those pictorial street guide display thingies with a big fat arrow saying YOU ARE HERE!
(Chalky) North is still at the top even in the Southern Hemisphere. Weather charts are a bit difficult to get the hang of because everything goes round backwards but North is still at the top. Everything would still go round backwards even if North were at the bottom. It's fundamental. I'm with you on maps. My father had millions of OS Maps, some dating from the 1930's. I've got them all now and a whole load more. I've made a contour map, six feet by two, of the North Downs from Farnham to the Medway. Wonderful what you can do with tracing paper and a scanner and printer. Needless to say, Maison Rosie (TQ 3516 5955) is bang in the middle.