My mom calls. "Van a ir al tri-co-tri?" She's asking if the kids are going out and Trick or Treating. El Tri-co-tri. You have to say it phonetically, TREE-COH-TREE. It's what Trick or Treat sounds like with a Cuban accent. The "El" is just to make it grammatically correct. El Tri-co-tri. Noun. (Or verb?) The act of dressing up and begging for ...