Blind man’s dog
A blind man was standing on the corner of a street with his dog when all of a sudden, the dog raises its leg and starts to relieve itself on the man’s trouser leg. The man reaches into his pocket and takes out a doggie biscuit. A woman who had been watching the whole thing runs up to him and says, “You shouldn’t do that. He’ll never learn anything if you reward him when he does something like that!”
The blind man retorted, “I’m not rewarding him. I’m just trying to find his mouth so that I can kick him in the ass.”