Mishandled Trickery Forgets the Truth
Attention about the literal meanings of phrases - especially common phrases - should be given to disambiguate what one feels the phrase should mean and how it comes across - especially to those who have never heard that common phrase.
There is a situation outside truth that builds a ratty nest of linked thoughts, few of which correspond to the meanings of the words employed. Idioms in that kind of situation seem (in the minds of the speakers) to outweigh straightforward meanings, even when those meanings were at first known by the speaker and then purposefully employed as a cover for the idiomatic meanings the speaker covered up with them.
The speaker forgets the truth and would falsely think he was righteous to demand the idiomatic meaning above the real one that he first started with, then used as a cover and then forgot the true basis he picked it as a cover in the first place.
A simple demand to methodically hold to the meanings of each successive word, even with the humble acceptance of idioms that are agreed upon, will leave semantic trickery holding its own worthless and empty bag while meaning holds accountable the speaker by the hearer to follow through with what was really said.