Classic joke of the day

A barber, a bald man and an absent-minded professor take a journey together. They have to camp overnight, so decide to take turns watching the luggage.

When it's the barber's turn, he gets bored, so amuses himself by shaving the head of the professor.

When the professor is woken up for his shift, he feels his head, and says "You idiot, you've woken the bald man instead of me!"

Don't blame me - Professor Mary Beard has been examining the manuscript of "Philogelos", the oldest collection of jokes. And I'm on holiday from friday, so expect a joke a day this week...