A man calls his mother in Florida.
"Mom, how are you?"
"Not too good,"says the mother. "I've been very weak."
The son asks,
"Why are you so weak?"
"Because I haven't eaten in 38 days." She replies.
The son says,
"That's terrible. Why haven't you eaten in 38 days?"
The mother answers,
"Because I didn't want my mouth to be filled with food if you should call."