Every married man knows that. Usually he finds out when he starts to shave one morning and tears the skin off his face in bloody chunks. My advice to guys about to be married or move in with their main squeeze, and to the fathers of all preteen girls: tell the women in your life they can use your razor to shave their legs, but please, please, please, change the blade, or dispose of it afterwards.
I agree that every married man knows that women have to shave their legs - I fully expected a few guys to complain that they wished some of us shaved our legs more often (public sightings of hirsute women).
I would add to your face-gouge request that there is an infection issue. My friend’s college prof’s face was paralyzed on one side. His daughter had borrowed his razor to shave her legs, he nicked himself shaving with that blade and acquired an unusual form of bacteria (doc believes bacteria came from her legs) that managed to cause nerve damage before it was brought under control. For that reason - the prof always reminded students not to borrow the razors of male guests or family members - it’s no small issue.