Guard Dog

In the small town of Whatsville, there were a lot of crimes going on, and
Dave wanted to get a guard dog. So one day Dave goes into the pet store
and says, "I need the best guard dog I can buy." The petstore owner goes
to the back. He returns with a tiny dog. Dave laughed and said, "That's no
guard dog!" The owner said, "Not only a guard dog, but this dog knows
karate," The owner said, "Dog, karate that chair." and the chair turned
into a pile of splinters. Dave said, "I'll take it!!" When he got home, he
told his wife about this dog and said, "Watch this, my dog knows karate."
The wife looked over and said, "Karate my ass!"