The story "The Truth About George" by P. G. Wodehouse is a funny story where Mr. Mulliner tells the narrator how his nephew George miraculously got rid of his stutter.
The nephew George, before making proposal his girlfriend for marriage, visits a specialist in London who advises him to talk to three complete strangers every day as a way to combat his stammer. George decides to do this immediately on the train back home.
But the first person he meets also stammers, and stammering back at this person would be crazy.
The second person he meets turns out to be a madman who has escaped from a local asylum, who wishes to perform a human sacrifice on George. George manages to escape and hides under a bench in the carriage.
A woman takes a seat in the same compartment, and when George emerges from under the bench and tries to talk to her, she assumes that George must be an escaped madman, and she pulls the emergency stop cord, causing the train to stop.
When a crowd of onlookers appears, George runs away from them at high speed, followed by twenty-seven people with pitchforks.
Thus cured of his stutter, he proposes to his girlfriend, and she accepts.
Here is the link to the text of the story:
https://standardebooks.org/ebooks/p-g-wodehouse/mr-mulliner-stories/text/the-truth-about-george