A man walks into a bar, and asks whether the owner of a Rotweiller is in. A large tattooed guy admits the dog is his, and the first man rather nervously says "I'm afraid my dog has just killed him!"

"I can't believe that - Slasher was the meanest dog in town. What kind of dog have you got?" replied the big guy.

"A chihuahua!"

"Must have put up one helluva fight."

"Not really - the rotweiller just choked on a bone!"