A woman with a morbid fear of drowning is on a ship in the middle of an ocean. Nervously, she asks a crew member 'Just how far away from land are we?'

Calmly, he reassures her 'You have nothing to worry about Ma'am, we're only 2 miles from land.'

Relieved, she inquires 'Oh, in which direction?'

'That would be straight down', he replies.