Reminds me of a milkman joke...
A bloke is putting his young daughter to bed one night, and as he leave her room he hears her praying, God bless Mummy, God bless Daddy, God bless Grandad, goodbye Grandma. The parent is somewhat bemused, but shrugs it off. The next morning, and the Grandma has died.
The following night follows the same routine, and he catches the same prayer again ...goodbye Grandad. The following morning, and the grandad is also, unfortunately, dead.
So the next night, the father listens intently, and hears ...goodbye Daddy. At this point he begins to worry, and so runs round all night in a panic, saying his farewells and working flat out to leave something to be remembered by. As dawn breaks he finally realises he isnt going to die, and phones his wife. ...Ive had a dreadful night dear... he says, only to be interrupted, YOUve had a bad night? The milkmans just dropped dead on our doorstep!