For those of you who don't know what it's about, it's the (fictional) story of X, a child who has no known gender. The child was raised to like dolls AND trucks, to excel at sports AND cooking.
Meanwhile, the Joneses were worrying about other problems. Toys, for instance. And clothes. On his first shopping trip, Mr. Jones told the store clerk, "I need some clothes and toys for my new baby." The clerk smiles and said, "Well, now, is it a boy or a girl?" "It's an X," Mr. Jones said, smiling back. But the clerk got all red in the face and said huffily, "In that case, I'm afraid I can't help you, sir."
So Mr. Jones wandered helplessly up and down the aisles trying to find what X needed. But everything in the store was piled up in sections marked "Boys" or "Girls." There were "Boys' Pajamas" and "Girls' Underwear" and "Boys' Fire Engines" and "Girls' Housekeeping Sets." Mr. Jones consulted page 2,326 of the Official Instruction Manual. "Buy plenty of everything!" it said firmly.
So they bought plenty of sturdy blue pajamas in the Boys' Department and cheerful flowered underwear in the Girls' Department. And they bought all kinds of toys. A boy doll that made pee-pee and cried, "Pa-Pa." And a girl doll that talked in three languages and said, "I am the Pres-I-dent of Gen-er-al Mo-tors." They also bought a storybook about a brave princess who rescued a handsome prince from his ivory tower, and another one about a sister and brother who grew up to be a baseball star and a ballet star, and you had to guess which was which.
The story shows just how much of our world is gendered, though we don't notice it. It illustrates the social construction of femininity and masculinity by showing the means through which they are created. Is it at all a shock that boys act a certain way and girls act another, that they like different toys and different clothes? No. Because we raise them to do just that!
Edit: here's the link! duh! http://www.trans-man.org/baby_x.html