Burns also seems to describe vegans in contrast to haggis-eaters:
Poor devil! see him owre his trash,
As feckless as a wither'd rash,
His spindle shank a guid whip-lash,
His nieve a nit;
Thro bloody flood or field to dash,
O how unfit!

But mark the Rustic, haggis-fed,
The trembling earth resounds his tread,
Clap in his walie nieve a blade,
He'll make it whissle;
An legs an arms, an heads will sned,
Like taps o thrissle

Slainte Mhath!