The dictionary definitions of convent and monastery do not include married men and women and single persons living separate lives in separate households.

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And that spells more stock market participation for married couples than for single men and women.

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Very roughly, in the past half-century the average weekly hours worked by married women have tripled, while hours worked by men and single women have stayed about constant.

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In fact, married couples generally perform better than single men and women, at least when it comes to retirement investing.

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Married men dial risk down and hitched women tend to own more stocks than they would when they were single.

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Examples included: "Married people who like prostitutes", "Single women who live nearby and who are interested in men and like getting drunk" and "Islamic men interested in men who live in Tehran".

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