John left the room to change into a sweater, but returned in his underwear and attempted to mount Tina; during the altercation, he tore through the dress and she scratched his forehead in self-defence.
The pair had sex multiple times throughout the night, and Tina's libidinousness eventually tired John; she unwittingly scratched him while stroking his hair.
To dissuade Tina's disbelief about John's homosexuality, Esmeralda told her of how they met at the Club Kama Sutra, which turned out to be a story of how she convinced a German woman to pose for nude photographs.
As John and Tina left, they discovered that the front gate was jammed; their attempts to call for the doorman were fruitless due to him being distracted by his pornography collection.
The scientist is dissatisfied with this apparently "true" account, and questions the logic of the "open door" policy, as well as the couple's response to the jammed gate.
Suggesting that the truth is hidden amid the embellishments and falsehoods provided by these four accounts, he reveals that the only fact he is certain of is that rather than immediately returning to Sonia's, the couple drove to the seaside to watch the sunrise together.