"Think outside the box" is a very well-known phrase that made me think: "why shall we concentrate on the existence of that mysterious “box” in the first place?" The social norms such as limitations to women (you can’t really be strong - this is rude; outspoken - more rude; and don’t even imagine to voice your dreams and desires - completely nuts!) AND men (having feelings is soft, having no feelings is ignorant; being a gentleman is great, but just be careful, some might thin