Green’s Dictionary of Slang

shop v.2

[fig. use of SE shop, as n. or v.]

1. to dismiss, esp. to dismiss a shop assistant.

[UK]Hotten Sl. Dict.
[UK]Sl. Dict.
[UK]Farmer & Henley Sl. and Its Analogues.
[US]H.L. Wilson Ruggles of Red Gap (1917) 76: It seemed probable that I should be shopped by Mrs. Effie for what she had been led to believe was my rowdyish behaviour.
E. Wallace Gunner xiv: If you’d done any jobs with him, as sure as death he would have shopped you.

2. (US gay) to look for a sexual partner, whether in the street or in bars, clubs etc; thus shopping n.

[US]Trimble 5000 Adult Sex Words and Phrases.
[US]B. Rodgers Queens’ Vernacular 56: Mother does most of her shopping at the Y.

SE in slang uses

In phrases

shop and rob (n.)

(US Mex. teen/gang) a convenience store.

[US]L. Rodríguez Always Running (1996) 76: The newly-sprouting convenience stores we called ‘shop and robs’.
shop around (v.) [SE shop around, to search out the best bargain]

to have a number of sexual relationships before choosing one that will serve for marriage or the longer term; thus shopping around n.

[US]N. Algren Man with the Golden Arm 116: Call me up when you’re eighteen. Right now I got to do some shoppin’ around.
[Aus]‘Nino Culotta’ They’re a Weird Mob (1958) 160: ‘Gees yer don’t just marry any sheila.’ ‘Yer wanter shop around.’.
shop in/out (v.)

1. (Aus.) to cheat, to swindle.

[Aus]Sydney Sportsman (Surry Hills, NSW) 4 Feb. 3/3: He had diddled people badly, / Shopped 'em in without a doubt.

2. (Irish prison) for a non-prisoner, usu. a warder, to smuggle contraband goods or letters into/out of the prison.

[Ire](con. 1940s) B. Behan Confessions 57: A warder who made a few ha’pence shopping in drink and cigarettes and shopping out letters, until he was caught.