Skipweasel gurgled happily, sounding much like they were
saying:

also I don't think anyone has mentioned that it is possible to force a
stop/tail bulb in the socket the "wrong" way around - thus making the
larger/brighter brake filament to work as tail light and vice versa....

Many cars now use a variant which has the pins at 120° instead of 180°.

That's purely to stop people fitting "clear" bulbs (180deg pins) in a car
that requires coloured (120deg pins), though. Not seen it on dual-
filaments (one pin's higher than the other), but on 21w orange-tinted
indicators.