He kens nae a mavis frae a madge-howlet.
He kens nae a selgh frae a salmon.
He kens nae the pleasures of plenty wha ne'er felt the pains o' poverty.
He kens whilk side his bannock's buttered on.
"There was a set of ancient brethren of the angle from Edinburgh, who visited St Ronan's frequently in the spring and summer, a class of guests peculiarly acceptable to Meg, who permitted them more latitude in her premises than she was known to allow to any other body. 'They were,' said she, 'pawky auld carles, that kend whilk side their bread was buttered upon.'"—St Ronan's Well.
He kicks at the benweed.
Benweed, ragwort. That is, he is headstrong, or unreasonable.
He lay in his scabbard, as mony a gude sword's done.
Meaning that he prudently allowed an insult or slight to pass without notice.