I just watched this video that some may enjoy. It's from polyglot New Yorker Xiaomanyc.
It's an enlightening trip exploring the Glaswegian dialect. He can speak any language it seems, but is genuinely confused at times by how people speak English in Glasgow.
I've been in London going on 20 years, so I'm maybe not as broad (unless I'm speaking to other Scots) as I used to be, but this is my native accent and dialect. I definitely didn't need subtitles, but you might!