When Beck Laxton and Kieran Cooper had an offspring, they decided that their Baby Sasha should not be influenced by society's prejudices and preconceptions when it comes to gender:
They referred to their child as "The Infant" and only allowed him to play with "gender-neutral toys" in their television-free home.
For the first five years of his life Sasha alternated between girls' and boys' outfits, leaving friends, playmates and relatives guessing.
But the couple have finally revealed his sex after it became harder to conceal when Sasha started primary school.
Yesterday Miss Laxton, a web editor, said that she thought gender stereotyping was "fundamentally stupid".
"I wanted to avoid all that stereotyping," she said.
"Stereotypes seem fundamentally stupid. Why would you want to slot people into boxes?