My mother-in-law is suffering from Alzheimer's disease. She beats and scolds me all the time, and she even pretends to call her son "husband." It wasn't until later that I discovered that her stupidity was all just an act! I rolled up my sleeves and rushed to her, sneering. "Do you know who I am?" My mother-in-law immediately pretended to be dumbfounded and shook her head vigorously. I slapped him in the face. "Then you remember clearly! I am your mother!"