trick or treat
n.— «The most intriguing role in the 66-minute film goes to the unseen informant who supposedly led the cops to the wrong address, where Mena was killed. The snitch offers insight into a practice called “trick or treat,” in which he bought drugs anywhere he could find them, then gave the drugs to Denver police, who used them as the evidence for warrants to search wherever they chose.» —“Film on police killing a must-see” by Jim Spencer Denver Post (Colorado) Apr. 13, 2007. (source: Double-Tongued Dictionary)
Further reading
If you speak a second or third language, you may remember the first time you dreamed in that new tongue. But does this milestone mean you’re actually fluent? And a couple’s dispute over the word regret: Say you wish you’d been able...
Jane in Denver, Colorado, notes some people using the term an in front of a word beginning with a consonant, as if to emphasize that word by modifying it with the incorrect definite article. That may be what’s happening in this scene from the...