Grandma Won't Learn Grandson's Name So He Mispronounces Hers
The concept of respecting your elders sort of goes out the window when they go out of their way to deliberately disrespect you. This person's grandma took no effort to learn a name, and refused to get it right out of spite. It seems like the only natural conclusion would be to give her some of her own medicine. For a different direction of a grandma story, here's a cringey guy who tried to correct a Japanese grandma on her own pronunciation of Japanese.