In the West, don’t mention religion. Catholic/protestant causes more fights than anything else. Even saying you follow Celtic/Rangers can be enough.
In the North, any mention of sheep-shagging will get you punched.(Dette er visst fordi de blir mobbet en del for det av alle andre)
In Edinburgh, if you say you like Glasgow or the West, you will immediately be hated.
And basically in all of Scotland, if you praise England or suggest we are one country, you will not be welcome.