Over the last 10-15 years, I feel like teenagers now use a lot of London based road man style dialect all over the UK.
Back in my teenage days, I loved the term "sound" as it meant generally good or decent.
In Edinburgh, we would say "soond" instead.
The peak was though, referring to a person you thought was a good guy – Soond Cunt.
Those days are now gone. 🥲