This text comes from The Book of Scottish Song, edited by Alexander Whitelaw, a historical songbook transcribed on Wikisource and reproduced from the pinned revision linked below.
Weary fa' you, Duncan Gray,
Ha, ha, the girdin' o't;
Wae gae by you, Duncan Gray,
Ha, ha, the girdin' o't;
When a' the lave gae to their play,
Then I maun sit the lee-lang day,
An' jeeg the cradle wi' my tae,
An' a' for the girdin' o't.
Bonnie was the Lammas moon,
Ha, ha, the girdin' o't,
Glowrin' a' the hills aboon,
Ha, ha, the girdin' o't;
The girdin' brak', the beast cam' down,
I tint my curch an' baith my shoon;
An', Duncan, ye're an unco loon,
Wae on the bad girdin' ot.
But, Duncan, gin ye'll keep your aith,
Ha, ha, the girdin' o't,
I'll bless you wi' my hindmost breath,
Ha, ha, the girdin' o't.
Duncan, gin ye'll keep your aith,
The beast again can bear us baith,
An' auld Mess John will mend the skaith,
An' clout the bad girdin' o't.