One weekend, a man decided to call his mother in Florida because it had been quite some time since they had chatted. The man asked his mother, "How are you doing?"
She said, "Not to good. I' have been very weak."
The son then asked, "Mom, why are you so weak?"
She said, "Because I haven't eaten in 38 days."
The son then asked, "How come you haven't eaten in 38 days?"
His mother replied, "Because I didn't want my mouth to be filled with food when you called."