Excessive coercion on a person to obtain a result already contemplated by the person exercising such coercion without worrying about the state in which the individual who is the victim of that pressure may end up.
It is an expression similar to giving "another turn" to a matter, finding you more possibilities, new points of view, "adjusting it a little more".
NUT RETURN Figuratively, thought, review, review, analysis of a situation. Parodies the sense that although the nut has already tightened, you can still give another tightening and improve.