On my way back from lunch, a van nearly hit me, barreling from behind into the left lane one instant short of an accident. I glanced over at the offensive party and noticed that they had a number of passengers, one of which was a small collie. I pulled forward to see if the dog would bark at me, and it did. So I rocked back and forth, to agitate the collie as well as the human content of van. And I felt some satisfaction when my plan succeeded and the van's interior filled with angry activity and noise.
Now that I think about it, I feel awful for torturing the dog.