The 1998 film, directed by Paul McGuigan, dramatises three stories from the book:
The Granton Star Cause is a comedy, where Boab is having a very bad day indeed. His parents throw him out so they can indulge in sado-masochism and he is sacked from his job, dumped by his girlfriend and dropped from his football team. It has elements of Franz Kafka's The Metamorphosis. One of the characters is a pitiless and profane God, who transforms him into a fly as punishment for wasting his life.
The Acid House: An acid trip and a bolt of lightning result in amiable schemie Coco Brice exchanging bodies with the baby of a middle class couple.
All three sections are independent, but are linked by setting and by the reappearance of incidental characters, in particular Maurice Roëves who appears variously as an inebriated wedding guest, a figure in a dream, and a pub patron. All three of his parts symbolise a human manifestation of God.
The film offended elements of the UK tabloid press with a depiction of a cynical and jaded, foul-mouthed God. In some English-speaking countries (such as Canada and the United States) it has been screened with subtitles because of the heavy Edinburgh accents.