A facial jig that shows huge disappointment or embarrassment, similar to a facepalm
but only to be used in extreme cases. Consists of a side to side nod and holding of the nose, accompanied with some sort of big sigh.
Dedicated to an ex student of my school known as Bullimore who used this facial expression to express utter despair in everything even slightly wrong with the world.
Upon learning that his flatmate genuinely believed that highland terriers roamed free in the highlands of Scotland Jay could be seen expressing his sheer disbelief using the Bullimore.