You resolve to try again and start the whole cycle from the beginning. A few pounds of weight loss may elevate your mood briefly, which makes the subsequent crash worse. Instead of dieting, adopt a healthy diet and lifestyle to banish mood swings.
Shilling (British coin) The shilling (1/-) was a coin worth one twentieth of a pound sterling, or twelve pence. It was first minted in the reign of Henry VII as the testoon, and became known as the shilling from the Old English scilling, sometime in the mid-sixteenth century, circulating until 1990.
A quid is a slang term for an english pound (currency not weight). Bob is slang for an old english shilling. Currently it's 100 pence = one pound. A shilling would be now worth about 5 pence today.