Cockney's just slang really.
"alright then TD, giss a Segwit, boy, Hey there's Heartsy, you cont, where you been"?
Zero of this is meant offensively.
They call it the "underclasses" in London, I call it the fun and interesting people.
It's very colourful.
"Are you rolling a 3 or a 5 conundrumed-boy? Just do a 3, let's go 'round the pub". That was my crowd. Facking Hal was there a lot too. Great fun.
3 or 5 was how many rolling papers. It's never 1. lol
And always hashish, and some unsavoury characters used black shoe polish to call Lebanese blonde Afghani Black.
Thankfully I'm not dumb and had good friends that, sure, call it cockney, great people.
It's just street language.