Some men might not tell the truth because they want to protect their image. For example, they may exaggerate their achievements to seem more impressive.
Maybe the truth is too hard for mummy to bear. For example, if you got into a big trouble at school like a serious fight, you might be afraid that mummy would be very disappointed or worried, so you choose not to tell her the true story.
The movie 'Don't Tell a Soul' is purely fictional. It was crafted by the imagination of the writers and filmmakers, not based on real events or people.
The 'Boys Don't Cry' true story is about Brandon Teena. Brandon was a transgender man in Nebraska. He faced a great deal of discrimination and hardship. Sadly, his gender identity was discovered by some local men who then brutally raped and murdered him. This story highlights the extreme challenges and violence that transgender individuals can face in a society that is often intolerant.
Maybe the true story is too painful or personal. For example, it could involve some family secrets or traumas that the author doesn't want to expose to the public.
Well, there could be various reasons. Sometimes, people don't tell the true story to gain an advantage. In a competitive situation, like a job interview or a business deal, they might exaggerate or distort the facts to seem more appealing or successful.