A man goes to the nursing home to visit his 84 year-old father. While there he notices the nurse is giving his father a cup of cocoa and Viagra tablet.
The man asks, ?Why are you doing that? I mean, at his age what will it do for him??
The nurse explains, ?The cocoa will help him sleep.?
?And the Viagra?? Asks the man.
?Stops him rolling out of bed.?