So “fuar’s ma mince” can be written in Standard English as “where’s my mince”.

In the same way, “fit kinna bliddy caper’s this” (my favourite line in the rap) means “What kind of bloody caper’s this”.

Most modern variants of Lowland Scots can be easily deciphered by speakers of Standard English with very little practise because they mostly consist of English words with non-standard pronunciation of certain vowel sounds. There are very few words of pure Scots origin still used in common parlance anywhere in Scotland.

If you guys thought this was hard, try translating something in Gaelic!