Working in the UK in the early 1970s introduced me to Estuary English with its wide variates of h-dropping and h-adding, not to mention the fricatives and affricates that you bumped into at every turn.
And then there was my cousin who worked in an off-licence (liquor store) part-time whilst at college with his stories of people drifting in for a “bottle of Graves”.
As in: holes in the ground for dead people ( /ɡreɪvz/), not the region in Bordeaux ( (/ˈɡrɑːv/).
Best of all was the guy I used to work with asking a mate for a look at his copy of “Oui”, a soft-core tits-and-teeth magazine of the era.
“Lemme ‘have a butcher’s* at yer “Oi” when yer finished…..”
*Cockney rhyming slang: Butcher’s hook = look