British shop runs out of cupcakes, British lady comes unhinged:

A mother trashed a cake shop after being told they had run out of her favourite flavour of cupcake.

With her children beside her, she smashed glass display units and threw cupcakes at customers after being told there were no more 'sweet tooth fairy cakes'.

"Sweet tooth fairy cakes" sounds like something expressly made for Dan Savage (as long as they were stale). The bobbies are looking for the mum, who is described as "well-built." That must mean something different in British. (Also: "favourite flavour"! I love how you use your U's, England.)