There are both "clean" and "bawdy" versions of this song. This version was printed in Johnson's "Scots Musical Museum." Burns reputedly wrote the second verse.

The Songs of Robert Burns with Music (Glasgow: David Jack, 1859), page 81:

1. As I cam' o'er the Cairney mount
And down amang the bloomin' heather,
Kindly stood the milking shiel,
To shelter frae the stormy weather.

CHORUS: O my bonnie Highland lad,
My winsome, weel-faur'd Highland laddie;
Wha wad mind the wind and rain,
Sae weel row'd in his tartan plaidie.

2. Now Phoebus blinkit o'er the bent,
And o'er the knowes the lambs were bleating;
But he won my heart's consent
To be his ain at the neist meeting