It's a pity that a song with such a universal meaning and nowadays so widely known is in a language that only some Scots and very few others understand. Other Scots and almost everyone else recognise "auld lang syne" (or more often "old lang zyne") only as a composite phrase having some vague meaning along the lines "old times", if indeed they understand it at all. They don't know the word "syne" in its own right, they don't know the verses, and they wouldn't understand them if they heard them.