Girl Stroke Boy (also known as Girl/Boy) is a 1971 British comedy-drama film directed by Bob Kellett and starring Joan Greenwood, Michael Hordern, Clive Francis, and Peter Straker, based on the play Girlfriend by David Percival.

Laurie brings home his new girlfriend Jo, the androgynous child of a West Indian politician, whose gender and sex Letty begins to question.

The cast included Margaret Leighton, John Standing (Lorn), Alan MacNaughton (George), and Michel Des Barres and was directed by Vivian Matalon.

But despite some engagingly batty dialogue, the script flogs its two jokes very nearly to death; and whereas the relentlessly climbing temperature just about retains its lunatic appeal until the end, the altercations over the epicene youth (white in the play, black in the film) have no real progression and quickly pall.

The film's one constant pleasure is in the expertly polished performances of Joan Greenwood and Michael Hordern as yet another set of respectable, contented and fearfully maladjusted parents.

"[10] Variety called it "a light, would-be sophisticated comedy" where "Young and old alike could find its single uni-sex joke tedious and sometimes unpleasant...