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

As they pass each other the woman leans out the window and yells, "Pig!"
The man immediately leans out his window and replies with "BITCH!"©OFFICEJOKES.NET

They each continue on their way, as the man rounds the next corner he crashes into a pig in the middle of the road.