whose

who's who

1. The specific, individual people in a pair or group. I have a large number of people working for me, but I still try my best to remember who's who. Because of their uniforms and helmets, I can never tell who's who when I'm watching our kids play football.
2. A gathering of the most famous, important, or influential individuals in a larger group, field, or profession. The gala event is shaping up to be a who's who of the film industry. The expedition—the single most expensive ever commissioned—will feature a who's who of renowned scientists and researchers.
See also: who

whose foot the shoe is on

Whose opinion, perspective, or interest is being considered or described. Usually used after "depends on." The legitimacy of these claims depends entirely on whose foot the shoe is on. I know you think it doesn't matter whose foot the shoe is on, but everything about this case changes if we look at it from a different point of view. The laws are impartial, and they should be applied the same to everyone, irrespective of whose foot the shoe is on.
See also: foot, on, shoe, whose

You and whose army?

A childish response to a threat, implying that an adversary is not powerful enough to carry out the threat alone (hence the need for an "army"). A: "If you don't leave, I'll make you get off this playground!" B: "Oh yeah? You and whose army?"
See also: and, whose
Farlex Dictionary of Idioms.

who's who

The outstanding or best-known individuals of a group, as in Tonight's concert features a veritable who's who of musicians. This expression comes from the name of a famous reference work, Who's Who, first published in 1849, which contains biographical sketches of famous individuals and is regularly updated. Its name in turn was based on who is who, that is, the identity of each of a number of persons, a phrase dating from the late 1300s. [Early 1900s]
See also: who
The American Heritage® Dictionary of Idioms by Christine Ammer.

you and whose army?

INFORMAL
People say you and whose army? to tell someone who has threatened them that they will not be able to do what they have threatened because they are not strong enough. `I'll make you sorry.' — `Oh yeah? You and whose army?'
See also: and, whose
Collins COBUILD Idioms Dictionary, 3rd ed.

you and whose army?

used to express disbelief in someone's ability to carry out a threat. informal
See also: and, whose
Farlex Partner Idioms Dictionary

who’s ˈwho

people’s names, jobs, status, etc: You’ll soon find out who’s who in the office.
See also: who
Farlex Partner Idioms Dictionary
See also:
  • force of numbers
  • a couple of (people or things)
  • couple
  • couple of
  • come from far and wide
  • along the beaten track
  • beaten
  • big and bold
  • chief
  • (there are) too many chiefs and not enough Indians
References in classic literature
The second of these children was a daughter, whose name was Molly, and who was esteemed one of the handsomest girls in the whole country.
As there are some minds whose affections, like Master Blifil's, are solely placed on one single person, whose interest and indulgence alone they consider on every occasion; regarding the good and ill of all others as merely indifferent, any farther than as they contribute to the pleasure or advantage of that person: so there is a different temper of mind which borrows a degree of virtue even from self-love.
Perhaps, moreover, he whose genius appears deepest and truest excels his fellows in nothing save the knack of expression; he throws out occasionally a lucky hint at truths of which every human soul is profoundly, though unutterably, conscious.
But the visionary shapes of a long posterity, for whose home this mansion was intended, have faded into nothingness since the death of the founder's only son.
Soon a great national dynasty arrives whose Emperors are often patrons of literature and occasionally poets as well.
365-427), whose exquisite allegory "The Peach Blossom Fountain" is quoted by Professor Giles in his `Chinese Literature'.
That devilish Iron Horse, whose ear-rending neigh is heard throughout the town, has muddied the Boiling Spring with his foot, and he it is that has browsed off all the woods on Walden shore, that Trojan horse, with a thousand men in his belly, introduced by mercenary Greeks!
What right had the unclean and stupid farmer, whose farm abutted on this sky water, whose shores he has ruthlessly laid bare, to give his name to it?
Th' infernal Serpent; he it was, whose guile Stird up with Envy and Revenge, deceiv'd The Mother of Mankinde, what time his Pride Had cast him out from Heav'n, with all his Host Of Rebel Angels, by whose aid aspiring To set himself in Glory above his Peers, He trusted to have equal'd the most High, If he oppos'd; and with ambitious aim Against the Throne and Monarchy of God Rais'd impious War in Heav'n and Battel proud With vain attempt.
It was only his apprenticed boys whose irrepressible spirits were not affected by the solemn and respectable mediocrity of that artist.
I confess, however, that I do not think of him as a patriot and a socialist when I read him; he is then purely a poet, whose gift holds me rapt above the world where I have left my troublesome and wearisome self for the time.
The first of these two clauses, it is clear, only provides a mode for appointing such officers, "whose appointments are NOT OTHERWISE PROVIDED FOR in the Constitution, and which SHALL BE ESTABLISHED BY LAW"; of course it cannot extend to the appointments of senators, whose appointments are OTHERWISE PROVIDED FOR in the Constitution[2], and who are ESTABLISHED BY THE CONSTITUTION, and will not require a future establishment by law.
And when the glance passed these bridges, whose roofs were visibly green, rendered mouldy before their time by the vapors from the water, if it was directed to the left, towards the University, the first edifice which struck it was a large, low sheaf of towers, the Petit-Chàtelet, whose yawning gate devoured the end of the Petit-Pont.
Jennings's heart, she is not a woman whose society can afford us pleasure, or whose protection will give us consequence."
Having made this rather lofty comparison I am less uneasy in calling attention to the existence of low people by whose interference, however little we may like it, the course of the world is very much determined.