this was not recent, but it was one of the funniest things i ever saw.
there was a 7 person pile up at north sydney train station once.
everyone was walking rapidly and closely behind every one else i suppose, and a person tripped over a "slippery when wet" sign on the polished granite floor. about 7 people cascaded into the pile of tripped up people.
people in business suits and formal dresses were intermingled and dirty on the floor.
when i saw the sign that he knocked over i almost suffocated because i could not choose when to breath during my paroxysm of laughter.