When I was really young, my family and I would get into arguments with the dog, with the dog's voice provided by different people, and "he" would identify himself as the legal beagle. The arguments were absurd, the entire premise is ridiculous, but it was dumb fun. He would always say he was performing a citizen's arrest for various things, the food wasn't on time, the treat was too small, he didn't like the walk because it was raining etc, etc. No matter what you argue back, he would just say, "Double jeopardy," and state that you were under arrest.