The key to this childish puzzle is to be found in the word that: it has no deeper meaning.
Het love, hasty vengeance.
Het sup, het swallow.
He wad gang a mile to flit a sow.
"Spoken of sauntering persons, who would take any pretence to go from their proper business."—Kelly.
He was miss'd by the water, but caught by the widdie.
He has escaped drowning only to be hanged, as "He that is to be hanged will never be drowned—unless the water goes over the gallows."—Dutch.
He wasna the inventor o' gunpowder.
Meaning that a person is very timid or cowardly.