when you hit your funny bone how come your laughing and crying at the same time?

Question: when you hit your funny bone how come your laughing and crying at the same time?

Asked by 9mcdej to Antonia, Douglas, Hugh, Matt, Tom on 21 Jun 2010 in Categories: General.
- Matthew Hurley answered on 21 Jun 2010:
  
  The funny bone is a nerve in your elbow called the ulnar nerve. It supplies the little finger side of your forearm and hand. That’s why these bits tingle when you hit it. I suppose you laugh because it feels weird and is more socially acceptable that bursting into tears?

Question: when you hit your funny bone how come your laughing and crying at the same time?