So here, J. Serano is talking about the consequences of opositional sexism (i.e feminity = opposite of masculinity, women = opposite of man)
First problem : with the idea that feminity and masculinity are opposite, you can't say that there are different kind of women, or men, there is only one for each.
Second problem : how could you possibly love or be something and the exact opposite ? (= "how could you be bisexual ? bigender ?")
Third problem : with that idea, if men are strong, then women are weak, if one is smart, the other one is dumb...
Fourth : How could you be feminime and be a man ?
#WhippingGirl