Mippy
Title ascribed to a person, animal or anything by design, which is less than desirable or a cause of irritation.

Often used to refer to a mood which is impacting upon another.

Originates from the mimicking of a person in a bad mood – ‘mip, mip, mip, mip’.

Can also be used to refer to food or weather.

Particularly suitable for cats and girls.
Sarah is really mippy today.

Charles has his mip on.