I saw the years of my life spaced along a road in the form of telephone poles threaded together by wires. I counted one, two, three... nineteen telephone poles, and then the wires dangled into space, and try as I would, I couldn't see a single pole beyond the nineteenth.
As part of it's 'Astro' program LAPD helicopters maintain an average nineteen-hours-per-day vigil over 'high crime areas', tactically coordinated to patrol car forces, and exceeding even the British Army's aerial surveillance of Belfast.
Annual income twenty pounds, annual expenditure nineteen six, result happiness. Annual income twenty pounds, annual expenditure twenty pound ought and six, result misery.
A man can sleep around, no questions asked, but if a woman makes nineteen or twenty mistakes she's a tramp.
Rincewind could scream for mercy in nineteen languages, and just scream in another forty-four.