A mouse was crossing Lime Street in the days when it was at its height as Liverpool's red-light district.
As it crossed the tramlines it mis-timed it and its tail was cut off by the front wheels of a passing tram
It turned around to rescue the tail, thinking it could be sewn back on, when the back wheels cut it's head off cleanly
Moral of the story:
Never lose your head when you're looking for your tail in Lime Street
Jim Carroll