to be past one's sell-by date

Fuente de la expresión: spoken source
Contexto: ALL would live long but none would be old said Benjamin Franklin in 1741. As the 20th Century draws to a close, life expectancy has certainly increased, but no-one likes to think of themselves as old.
And how old is old these days? Is a 45-year-old woman "past her sell- by date" as the Pennell Initiative, a pressure group set up to help older women, yesterday accused doctors of thinking? If so, how do you account for Elizabeth Buttle, who recently gave birth aged 60? When should a man retire?
Tipo de fuente: newspaper
Autor: The Independent (Glenda Cooper)
Título de la fuente: If you're not past your sell-by date, maybe you're entering the Fourth Age
Año: 1998
Web: http://www.independent.co.uk/life-style/if-youre-not-past-your-sellby-date-maybe-youre-entering-the-fourth-age-1148770.html
Idioma: English
Nivel de uso: Sin definir
Marca dialectal: Sin definir
Frecuencia: Sin definir