"Man from the South" is a short story by Roald Dahl originally published as "Collector's Item" in Collier's in September 1948.
It has been adapted several times for television and film, including a 1960 version that aired as an episode of Alfred Hitchcock Presents, and starred Steve McQueen, Neile Adams, and Peter Lorre.
After the eighth successful strike, a woman bursts into the room and forces Carlos to drop the knife he has held ready to sever the American's finger.
She explains that Carlos is mentally disturbed, having played this game so often in their home country that they had to flee in order to keep the authorities from committing him to a psychiatric hospital.
This short story was filmed as a 1960 episode of Alfred Hitchcock Presents titled "Man from the South", with a teleplay by William Fay and directed by Norman Lloyd.
The lighter fails to start when flicked for this, a sly indicator of how narrowly the gambler avoided losing the bet as well as his finger.
[1] Dahl's story was adapted for a scene from the 1980 Tamil movie Ninaithale Inikkum, which involved a wager by a millionaire that a young man could not flick a cigarette into his lips ten times in a row without dropping it.
The characters in this segment explicitly discuss the 1960 Hitchcock episode adaptation, although they incorrectly refer to the title as "The Man from Rio".