Guess it’s not trivial because the article I linked claims Scottish is not a dialect of English but another language on its own. Not sure if that is widely accepted.
It is widely accepted. If it were just a dialect I'm sure you could quite easily tell me what this says?
Ca canny at the moo' o' the burn and then hud 'er chappin'!
Fit yi gan ti dee wi yersel fan yer aller?
Ca tee the door fan ye gan ben the hoose
Thon loon is a richt glaekit crattur
Haud yer weesht!
Fan the bobbies came to the door wee Dod got sic a fleg he cacked his breeks
Fit fit fits fit fit?
To more confuse matters, all of those phrases are Doric. Which is a dialect of Scots particular to the North East.
Scots is recognised as a language by the Scottish Government, European Union, and the UN.
More reading:
A ‘Once and Future’ Language
Wit ye sayin aboot Scots?
Doon a rabbit hole: Rediscoverin Scots writin fae dissertation tae preservation
The Scots Glossar
My grandparents and parents all received the belt from teachers for speaking their local tongue. If you didn't speak proper English, even amongst your friends in the playground, you got the belt. That was government policy. If it were just a dialect it wouldn't have been beaten out of children in schools by a colonial oppressor.
spoiler
The phrases meant:
Be careful at the mouth of the river and then keep going forward!
What are you going to do with yourself when you're older?
Close the door when you go through the house
That boy is a right silly creature
Be quiet! (hold your tongue)
When the police came to the door small George got such a fright he shit his trousers
Which foot fits which foot? (Most likely said in a shoe shop)