Pig or Witch

A man is driving up a steep, narrow mountain road. A  woman is driving down the same road. 

As they pass each other, the woman leans out of（把身体探出） the window and yells "PIG!!"  The man immediately leans out of his window and replies,  "WITCH!!" 

They each continue on their way, and as the man rounds the next corner, he crashes into a pig in the middle of  the road. If only men would listen.