The moment has been pilloried widely in the British media, tacky and over the top they all think, but is it just sour grapes?
And, while I expect that some right-wing talk show hosts will suggest that the reason the media is mentioning it now is to try to sour conservatives on Rubio, that's really not what's going on here.
It is difficult to separate sour feeling from sober analysis in Mr Besson's partial text.
For the unions, however, it is not simply a matter of sour grapes or settling the score for the failure of national Democratic leaders to step up to the plate.
FORBES: Unions To National Democratic Politicians: Who Needs You?
To propose that we superannuate our voting system is a futile gesture, because it smacks of sour grapes.
It sounds like sour grapes, but the point is to give the bosses an incentive to get lower-paid workers into the plan.
Crude oil, or its substitutes, will be produced for decades, but at an increasingly expensive tariff, both in terms of cost and energy, as it is sourced in the form of a heavy, sour (high-sulphur) material, or in synthetic form from tar-sands, shale and coal.
"It doesn't matter how sour the internship is going, you want to have the company, your boss especially, primed to tell your next employer that you worked hard, " agrees Rusty Rueff, a former human resources executive and author of Talent Force: A New Manifesto for the Human Side of Business.
Premier Foods is selling its vinegar and sour pickles business as it continues its strategy of concentrating on "power brands".
In the flush of early excitement, it is all too easy to forget that a relationship may turn sour and the figures for turnover at the top suggest a steeply rising corporate divorce rate.
Gabriel Villalobos, a Spanish-language talk radio host in Phoenix, said many of his callers believe it is the wrong time for marches, fearful that that any unrest could sour public opinion.
Gabriel Villalobos, a Spanish-language talk radio host in Phoenix, said many of his callers believe it is the wrong time for marches, fearful that that any unrest could sour public opinion on immigration reform.
Meanwhile, the world is awash in supply of sour crude without many refiners able to process it.
The eyes narrow and the mouth is awry, one corner twisting into an Elvis curl, though it looks too sour for seduction, let alone song.
Those bets could sour, however, if the American economy slows, as many suspect it is already doing (see article).
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