People at the top of the office or social pecking order often receive quick callbacks, do not worry about calling other people late at night and tend to get more calls at times when social events are most often organised, such as Friday afternoons.
From foxing telesales operatives by faking his own death ("If they can still hear you breathing, they'll seal the deal") to the relative merits of different breads, James Acaster gives each of his routines a personality and his callbacks give the set a unity belying the random nature of its constituent parts.
They don't this time but several people – not least a professional Irish actor called Stephen who gives a terrific Joker in full charity-shop-sourced regalia and blood-curdling laugh – get callbacks.
They found that foreign women get fewer callbacks than the average, but still more than unattractive women - on 12 per cent - or a foreign man - on 13 per cent.
Their debut is a tightly written affair with plenty of callbacks and clever-clever deconstruction of the act of sketch - a trope that is rarely as amusing to audiences as it is to performers - but it is set apart by its leftfield approach to its other material.
That's not just because of all the Coen callbacks: The 'going crazy up there at the lake' from the Fargo film and the gas station interaction like out of No Country For Old Men to name just two.
And while the hour is tied up with a rush of callbacks and a concluding message about life's increasing incomprehensibility, it feels like a case of retrofitting this rather aimless set with purpose.
He was an expert at recognising and maintaining running gags – or, in his comedy generation's terminology, callbacks.
Moreover, she peppers her set with callbacks and clever asides and her easy charm gives her more wind beneath her wings than she had on the day of her accident.
As her friend soared, Watts was left behind, dealing with that endless round of auditions, callbacks, knockbacks and disappointments that most actors face.
Although reimagined with modern technology, the Vega+ has a few callbacks to the original computers - the console is emblazoned with the classic retro Sinclair logo, and the trademark rainbow stripes take pride of place on the front.
