Like you, we here at Shmoop hate being put into boxes. And the Victorians forced "abnormal" sexuality into two such itty bitty cultural boxes: "the brothel and the mental hospital would be those places of tolerance."
The Victorians made "abnormal sexuality" = "sick in the head." And Foucault, in The History of Sexuality, views the construction of these easy categories as fatal mistakes. Luckily, the psychological community doesn't feel that way anymore. But some people do.
People in power are always the ones who decide what is normal and what isn't. So what other codes of conduct—aside from our sexual attractions—can you identify as being determined by people of power?