It is the same in Scotland, or certain area's, at least. I seem to recall you saying you've visited Edinburgh, Yuri. Edinburgh is probably one of the places in Scotland where the language used is understandable to most people. Here is a video which will demonstrate an example of an area of Scots English. I can understand all of this, so any questions, please ask away
...And I must warn of the frequent use of bad language (swearing, profanity... whatever you call it)
YouTube - Britains Toughest pubs - Aberdeen
But Glasgow is the place that has the hardest to understand Scots English. lol