Not Happy...

This morning, I was in a huge hurry and on my way to work. I was preoccupied with what my day held and I rear-ended a car at a stop > light because I was not really paying attention.
"Great, just great", I muttered.
The driver opened his door........leaned out of his car and stared at me. He was a dwarf. He got out, studied the damage on his bumper, and walked towards me as I rolled down my window.
He said, "I am not happy"...
To which I replied, "Well.... which one are you then?"