How do you play Mad Dog?

It seems you might be asking about a game or a specific activity called "Mad Dog." However, there is no widely recognized game or activity with this name.

It's possible that:

* You're referring to a local or regional game. Could you provide more context? Where did you hear about this game? What are the general rules or gameplay?

* The name is a slang term for something else. Perhaps it's related to a specific type of game or activity.

* You've misremembered the name. Is there a similar game or activity that comes to mind?

Please provide more information so I can help you understand what you're looking for. 😊