Mulla Nasrudin

The omen that worked

   A thief was stealing Nasrudin’s cloak. By coincidence, at that
very moment, his donkey started to bray.
   Nasrudin was exultant, and started to shout: ‘A marvelous 
omen! Good news! Safety follows an ass’s braying!’
   The thief was so alarmed at this noise that he dropped the cloak
and fled.