While we're on this sort of subject, I guess you are all familiar with the one about the 3 missionaries and 3 cannibals who all need to get across a river. They have a canoe which can take two people, but which cannot cross the river without someone to row it. The Missionaries cannot allow themselves to be outnumbered by the cannibals on either shore or they'll get eaten. How can they all get safely across ?
Perhaps as it's halloween I should have made that Vampires and Virgins rather than missionaries and cannibals; it would have been more PC too.
