imagine a 'W' at the beginning of the last sentence and it might make sense.

A grommet is one and two thirds groats.

A hen dropped from an aeroplane would be able to control its descent with a 1.41m ball of elastic bands.

If a meteorite the size of a house brick were to strike Loch Ness, all life within the Loch would be ended and thus conclusive proof of the exictence or otherwise of Nessis would be garnered.

"Wallace and grommet" is actually an old folk saying which is too rude to translate here.