"Stinking" Bishop's Kettle

Origin
Originally owned by a man named Mr. Bishop, first name unknown. A pear farmer who was known for a particular breed, as well as a particularly irritable temperament that earned him the nickname "Stinking Bishop". This name stuck with the fruit, technically named Moorcroft, and the eventual brand of cheese that would be fermented with the pears from 1994.

One possibly apocryphal tale about Stinking Bishop tells of how he one day lost his temper with his tea kettle for taking too long to boil. Letting his anger win, he took his gun and shot it.

Effects
When water is boiled it the kettle, which has a noticeable hole through the side, it gradually builds the irritation of everyone in the room. This temper becomes harder to control as it reaches boiling point, and the moment the kettle whistles is often accompanied by an impulsive act of aggression.

It's hypothesized that the cartoon trope of rage being indicated with a cloud of steam may have been in part caused by this artifact.