5 definition by Philmadison

The act of causing rapid evacuation of a room or other confined space by floating a particularly nasty air biscuit. Most commonly, a grierson requires the assistance of a tarka for maximal effect. The word is derives from the name of a rotund large-eared red-headed gentleman scholar of an unathletic nature (not to be confused with a waby), who claimed to be able to clear the audience of a 300-seat lecture theatre in 10 seconds.

The new metric unit of aerial noxiousness. Most commonly applied to the scientific quantification of odious flatulence. Defined by the radius of devastation: 10 centigrierson (cGr) will eliminate 50% of sentient life forms within a 1 metre radius. Named after the now notorious scholar, Grierson, who continued to consume numerous plates of tarka despite clear medical advice. The US unit, the air biscuit, is equivalent to 18.4567cGr.

Large-eared and redheaded but not known for sexual athletics. Similar to Waby in the less interesting aspects. Inclined to chapman and utterances of monk at odd times.

A light, polite fart.

A euphemistic term used by females to warn of the release of an air biscuit or, in extremis, a grierson.