ASA IS BUYING A GIFT FOR HIS MOTHER, AN OVERBEARING WOMAN WHO IS DIFFICULT TO PLEASE , ?…

ASA IS BUYING A GIFT FOR HIS MOTHER, AN OVERBEARING WOMAN WHO IS DIFFICULT TO PLEASE. WHEN A CLERK ASKS HIM WHO HE IS SHOPPING FOR HE REPLIES, MY SMOTHER INSTEAD OF MY MOTHER. WHAT DOES THIS EXEMPLIFY