Well this starts off unfunny but gets better...
My friend has a sweet little dog, Oscar - it's a miniature Snauzer and is very quiet and humble. On Tue she was out for a walk and bumped into another dogwalker she recognised. This woman had a Staffordshire Bull terrier. They struck up conversation whilst the 2 dogs - both on leads - sniffed around eachother as dogs do.
The Staffy started getting a bit boisterous and began to paw at Oscar's face. Oscar wasn't impressed and gave a little growl. Suddenly the Staffy went for him and latched on to his ear and neck. Oscar was screaming in pain.
The Staffy owner got hysterical and was trying unsuccessfully to prise her dog's jaws open whilst saying it had never done anything like that before. My friend - cool as you like - said to the woman 'You have got to stick your finger up its bottom and it will let go'. The woman did so and the dog released.
I do feel terribly sorry for poor old Oscar, who now has a chunk of ear missing. But try as I might... I just can't help laughing when I think of the poor woman out with her dog and my friend made her stick her finger up its arse!