Mother in-law....

A married couple was in a terrible accident where the man's face was
severely burned.
The doctor told the husband that they couldn't graft any skin from his
body because he was too skinny.
So, the wife offered to donate some of her own skin.
However, the only skin on her body that the doctor felt was suitable
would have to come from her buttocks.
The husband and wife agreed that they would tell no one about where
the skin came from, and they requested that the doctor also honour
their secret.
After all, this was a very delicate matter.
After the surgery was completed, everyone was astounded at the man's new face.
He looked more handsome than he ever had before!
All his friends and relatives just went on and on about his youthful beauty!
One day, he was alone with his wife, and he was overcome with emotion
at her sacrifice.
He said,
"Dear, I just want to thank you for everything that you did for me.
How can I possibly repay you?"
"My darling," she replied, "I get all the thanks I need every time I
see your mother kiss you on the cheek".