Women taught us is an excuse for sexism in which the perpetrator is thought not to be at fault because women should have taught (usually) him to not be sexist. A common version of this is arguing that mothers of sexist people brought them up wrong (without questioning the essentialism of assuming that mothers do the vast bulk of socialisation). Another is saying that of course the person is sexist, when women have not offered that person a relationship and thus the social control and education that a relationship with women is supposed to give.