What these are asking you Luke is, WHOSE idea of "masculine" should we teach? Standards are largely cultural and regional, as well as generational. For instance, manly men in the Regency period wore brightly colored skin tight pants, ruffles on their shirts and cuffs, heavily embroidered waistcoats, carried lace hankies, strongly perfumed and wore powdered wigs. Frontiersmen like Daniel Boone might have worn coonskin caps and fringed pants and shirts but when he dressed up for the ladies it was quite a different picture. Men in the Middle East wear robes (you'd probably call them dresses)
Is it wrong for a man to carry a bag? Do you limit your yes to a particular kind/type? Is it manly to carry your wife's purse for her? How about changing diapers? Is that masculine?
Conversely, what's feminine? Is it wrong for a woman to know how to wield a hammer and screwdriver. How about install a wood floor? Know how to repair a toilet? Or unstop the kitchen sink? Should a woman only sit on a satin pillow and eat bon bons all day?
Good questions.
First of all, culture does have some say in the way we define femininity and masculinity. It does not have ALL of the say, mind you, but it does have some of the say. This is clear in Scripture.
Paul told the Corinthians that men should not have long hair and women should have long hair and he cited culture as his justification for this.
As most of us know, the point Paul was making was not that women should never cut their hair short in any age and any place. The point was that in that culture long hair represented something as well as short hair and the Corinthian Christians should observe what those things represented appropriately.
This is one of numerous examples where Scripture recognizes that contemporary culture has SOME say in how we define many things.
Since the attire of our nation's forefathers with the ruffles and tights, etc... was considered to be perfectly manly in that culture at that time, then their attire was appropriately masculine.
2. Note that I have not one time said anything about the way people dress from the OP to this post. I have avoided this on purpose.
3. There are characteristics of men and women that are distinctive to each sex in every culture.
Men and women are built very differently by design of our Maker.
The physique of men and women are very different. This difference has much to do with how we walk and talk and move.
Child bearing hips vs broad shoulders, delicacy vs ruggedness, beauty vs strength, estrogen vs testosterone- these are universal; they traverse all cultures. It is not that women cannot be strong, for example, but it is that they are not marked for their physical strength among the sexes. These are complimentary distinctions. They are part of the Maker's brilliant and benevolent design.
They translate to a particular distinctness in the way we walk and talk and move. The muscularity and density of the joints is different. The proportionality of the figure is different by God's intentional design.
Men and women should EMBRACE this distinctness as part of the wisdom of God as an act of submission to him concerning the roles he evidently assigned AND as an act of worship to Him for his brilliance and goodness in his creation.
I do think that when women seek to be as strong as men and men seek to be as beautiful as women that it is rebellion against the wisdom of God. I think when a man has an excessive concern with personal beauty, he is saying that he does not like the roll in this world that God designed him for. I think that when a woman has an excessive concern with being tough and strong then she is saying she opposes the design of the Maker for her.
Everything we do communicates something. We communicate with facial expressions, postures, movement, etc... The way a man walks communicates something, for example. A man can communicate confidence, arrogance, humility, insecurity, anger, happiness and all kinds of other things simply by the way he carries himself when he walks.
When he walks in a way that is distinctly masculine he communicates a satisfaction in the Maker's design of him as a man. This is true of how he talks, moves, etc... as well.
The same is true with a women.