I don't for a moment pretend that I understand youth slang - and probably haven't for the past 25 years. But none-the-less it excites me. I find it fascinating how language evolves, changes and adapts.
But slang is not just the preserve of the kids. Every industry and profession has its own language. That is fine, but knowing when and where to use it is important.
It is all too easy to lose your audience by using a language they don't understand.
And worse, trying to use a language without understanding it properly. Your bruv will think you a durkboi!
If you struggle to understand the teenagers and young people around you when they call their schoolfriend a durkboi and try to cadge some peas, you are not alone. A defining characteristic of youth slang is thought to be its faddishness – the fact that terms have a rapid turnover, quickly coming in and out of fashion and then disappearing before parents and teachers have time to decode them. The reality is more complicated: novelty is all-important but for each generation the expressions they encounter will be new to them. So although each age group and almost every local clique do invent their own words, there is a common core of slang that persists for years: such as cool, wicked, solid and sick for good, and chilling for relaxing.
https://theconversation.com/dinter-bitz-and-gwop-a-guide-to-british-youth-slang-in-2016-52037