trick or treat
US /trɪk ɔr triːt/
UK /trɪk ɔr triːt/

1.
dolcetto o scherzetto
a Halloween custom in which children in costume visit houses and ask for treats, threatening to play tricks if they do not get them
:
•
The children went from door to door, shouting "Trick or treat!"
I bambini andavano di porta in porta, gridando "Dolcetto o scherzetto!"
•
Every Halloween, my kids love to go trick or treating.
Ogni Halloween, i miei figli adorano andare a fare "dolcetto o scherzetto".