Guide-dog Jokes

John is waiting to cross the street when a blind man approaches with his guide-dog. The sign lights to cross and in stead of helping his boss to cross the dog raises his rear leg and pees on the pants of the man. The man reaches in his pocket and gives the dog a cookie. John is amazed and tells the man: "If it were my dog I would have kicked his ass!". The man calmly answers: "I'm going to. But I need to find the head first".