Man from the South is a short story by Roald Dahl. In this story, an old Hispanic or Italian man apparently named Carlos offers a boastful American boy his Cadillac if the boy can strike his lighter ten times in a row - the boy had been bragging that his lighter always lit. The catch is that if he cannot, his left little finger will be cut off. However by the eighth light a woman comes in the room and throws Carlos to the bed, claiming that he is mentally disturbed. Apparently, he has taken forty-seven fingers from various people and has lost eleven cars. She mentions that everything he had was won by her long ago, including the car, and as she reaches for the Cadillac's car keys the narrator sees the hand has only one finger and a thumb on it.
This short story was filmed as a memorable 1960 episode of Alfred Hitchcock Presents starring Steve McQueen as the reluctant young gambler, Peter Lorre as Carlos, the man who bets his car, and Neile Adams (McQueen's wife) as a woman McQueen's character meets.