I remember in 1980 my brother & I caught a red rattler after the footy and to our surprise we opened the train doors to find a half empty carriage. We were pretty stoked at the time as it was always extremely difficult to get on the train after a game let alone find a seat.
As we walked in we soon realized why it was empty.....
Someone had decided to take a dump right in the middle of the aisle as you entered the carriage. Dirty bastard!