A man called his mother in Florida.
He said to his mother, "How are you doing?"
She said, "not to good. I've been very weak."
"Why are you so weak?"
"Because I havn't eaten in 38 days."
"Why haven't you eaten in 38 days?" the son asked.
His mother paused and answered, "Because i didn't want my
mouth to be filled with food when you called."