Premiering at the Institute of Contemporary Arts in London on 10 September 1969, the 42-minute film consisted of a single shot of her husband John Lennon's semi-erect penis.
Lennon would later state in an interview about the film that the semen drop was accidental, and that the original idea was for his penis to rise and fall.
This footage was intended to be part of another variation (a split-screen presentation, like in Andy Warhol's 1966 film Chelsea Girls) of Self-Portrait, in which the crowd's reactions would be projected alongside the image of Lennon's penis.
Lasting some 40 minutes (it seemed like an eternity), it focused upon the unaided tumescence and detumescence of his member, reaching some sort of climax with a pearl-like drop of semen.
John and Yoko were in the cinema, and during the performance there was a door open to the left of the screen with a sharp red light directed towards the auditorium.
Otherwise that Film Critics' Circle might now be part of a permanent installation projected on the wall of Liverpool's John Lennon International Airport.