Impudic

Oh, won't you hide those impudic thighs????????

Source: wiktionary

Deferring me to the article, I live that there were indeed mushrooms volvaires which well-sure did not fail to be edible. My astonishment was however going to still increase with the reading of the Petit Robert. I discovered that the phallus was not used for only in the form of the "phalloid" adjective to indicate a mortal mushroom. Phallus as such indicates a mushroom to be strictly accurate. Thus I live impudic names of phallus or phalli of dog which indicated mushrooms basidiomycetes of phallic form and with the nauseous odor (stinking, or cadaveric odor I noted).

Source: wiktionary

So you should be allowed to wear a scarf in a school courtyard because of unpleasant weather. But there is no "natural" reason to wear it inside the classrooms or when it can be dangerous (machines) or to refuse to do sport in light clothes, even with a tolerated scarf, because there are boys or other "impudic" girls in a gymnasium or a swimming pool. So, IMO the scarf can't be banned totally when used as a protection or piece of fashion.

Source: wiktionary