Usually some dentist offers to X-ray bags of candy loot.
I wonder if there is a term for a Urban Legend that comes true after the UL is common? In other words, someone gets the idea from the UL.
Snopes agrees-
We searched for cases of children accidentally eating marijuana edibles that were slipped into the Halloween candy for every year since 2010, and while we found multiple warnings during this timeframe, we didn’t find a single case of a person purposefully giving children marijuana edibles in an attempt to harm them.
Joel Best, a professor of sociology and criminal justice at the University of Delaware, said:
“Children are not at risk for contaminated treats … For one thing, edible marijuana products are very expensive and this would be a very expensive prank.”
“My research stretches back to 1958 … I have been unable to find any evidence that any child has been killed or seriously injured by a contaminated treat picked up in the course of trick-or-treating.”