Yes, everything you know is Wrong.
Kick back with a nice warm Bear Wizz and wait for the daily miracle, even if it's paisley yet again.
Seriously, can you plug a typical lamp into that socket without a fail?
And 'hot' is the small slot on the right....unless the socket is for 240vac single phase and ought to be configured for such and looks 'odd'....
I'm not an electrician (got tired of waiting), but can look like one....