legs. clothes; "legs" put by Figure of speech Metonymy (of Subject), App-6, for the clothes on them.
are not equal. are lifted up: i.e. the clothes being lifted up expose the lame legs. So. fool exposes his folly in expounding. parable.
Related Commentaries of Proverbs 26:7
Proverbs 26:7
7 The legs of the lame are not equal: so is a parable in the mouth of fools.