If you could make one “guy problem” instantly understood by women, what would it be?
I agree with top-voted comment. Hints don’t work. Hints are useless. Use your words. As a grown-ass adult, get some gumption and use your fucking words.
Men have been trained very very very well that one woman’s “obvious hints” are another woman’s “just being friendly.” And they are indistinguishable. So that’s why you only get harassed1 by losers and not approached by the guys you want to be near you.
Hints are not going to be noticed nor assumed to be worth a warm tin of cat spit from any man you’d want to be with. So woman up and make what you want to happen happen.