Some people mock those who write, :that cat ate it’s dinner.
But that is related just to what is customary:
the cat ate its dinner …. means its own dinner
“The cat ate it’s dinner” means another being called “it” had its dinner eaten by the cat.Alas.
But usually the context tells us.
“I have lost my head” might confuse some of us.It’s most often a dead metaphor.
I lost my head and told my husband I regretted ever meeting him.But my head was screwed on the right way later.
She lost her head and swore at the Rabbi who gamely swore back to keep their friendship alive except it was all in his head.She didn’t even know he was a Rabbi, but believed he was a soft toy with a missing tee.That’s life.For some of us
How my heart sings 