Seriously late to the party but 'Mickey', like porkies is from cockney rhyming slang, the full would be 'Mickey Bliss', and you can get it from there. Who he was seems to be a mystery. Pear-shaped is disputed but often attributed to glass blowing or pottery industries when trying to make a sphere, but it goes wrong. Cack handed I recently unraveled. Cack in isolation is old slang for poop. So poop-handed is a reference to Brits colonial discovery that in India people wiped their backsides with their left hand only. So cackhanded essentially means 'awkwardly' as if you were doing something with your non-dominant left hand.
"Ark at 'e" is a very Bristolian saying. I'm not sure that you'd be understood if you said that in London or Manchester! By the way, as a Bristolian myself, it's nice to hear a genuine Bristol accent like that of your husband Paul. When non-Bristolians try to imitate it they usually get it horribly wrong.
