sophistry, false logic

to use / to employ / to make use of, to apply / to spend

failure, miscarriage / mistake, fault, error

fail / make a mistake

oneself / first-person pronoun: I, me (often shows the speaker's lower position in a hierarchy than the addressee) / (Kansai) you

he / distal demonstrative, something far off removed from both speaker and listener: that / boyfriend

distal demonstrative, something far off removed from both speaker and listener: that, yon / particularly, male personal third person pronoun: he / by extension from he: boyfriend

he; boyfriend

to cheat or deceive / to lie / to evade a question or deflect attention; to gloss over a mistake; to fudge; to bullshit / to embezzle / to defraud or swindle

to use one's head