The story
- Scots · borrowed fromlang may yer
- English todaylang may yer lum reek
PIE word *dlongʰos Borrowed from Scots lang may yer (or your) lum reek (expression of good wishes for one’s prosperity, literally “long may your chimney smoke”): from lang (“long”), lum (“chimney”), and reek (“of a chimney: to emit smoke”).
Etymology from Wiktionary, CC BY-SA 4.0.