On the BBC website
The author said the tweets, from 2017, were made in "cheerful vulgarity".
The writer said that, as a gay man, he has "rejected restrictive cultural gender stereotypes for "as long as I can remember", but does not believe in gender identity.
"It is impossible for a person to change their biological sex. I don't believe anybody is born in the wrong body," he said.
www.bbc.co.uk/news/entertainment-arts-48526656