get someone's number
Also, have someone's number. Determine or know one's real character or motives, as in You can't fool Jane; she's got your number. This expression uses number in the sense of “a precise appraisal.” Charles Dickens had it in Bleak House (1853): “Whenever a person proclaims to you, 'In worldly matters I'm a child,' ... that person is only crying off from being held accountable ... and you have got that person's number.” [Mid-1800s]
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And yes, someone has already called Spencer a “Small Fry,” har har.Freaking Out About Age Gaps in Gay Relationships Is Homophobic|Samantha Allen|January 9, 2015|DAILY BEAST
For someone with anorexia, self-starvation makes them feel better.
“Someone is determined to keep Bill Cosby off TV,” she continued.
Binge eating and purging does the same for someone with bulimia.
But if you have a hearing and you prove that someone is mature enough, well then that state interest evaporates.
The country is well inhabited, for it contains fifty-one cities, near a hundred walled towns, and a great number of villages.Gulliver's Travels|Jonathan Swift
We had six field-pieces, but we only took four, harnessed wit twice the usual number of horses.
There are a number of bacilli, called acid-fast bacilli, which stain in the same way as the tubercle bacillus.A Manual of Clinical Diagnosis|James Campbell Todd
Five of the number had studied with Liszt before, and the young men are artists already before the public.Music-Study in Germany|Amy Fay
Ollie saw someone standing before it, bending slightly forward in the pose of expectation.The Bondboy|George W. (George Washington) Ogden