A threat issued by children in costumes as they go door-to-door on Halloween night, which roughly translates to "give me candy unless you want your house covered in toilet paper and eggs."
from car TRUNK + trick OR TREAT. A style of Halloween trick or treating where children solicit candy and other goodies not from households but from car trunks in an entertainment style similar to tailgating. Trunk or treating has its origins in late 1990s Utah but has since spread to some other locales, generally small towns or suburbs in the Midwest and South. To host a trunk-or-treat event, a sponsoring entity (usually a local church) will offer its parking lot on Halloween afternoon and evening. Participants agree to bring their cars and stock the trunks with candy. A growing custom, there are now websites devoted to explaining the ritual and offering tips for decorating car trunks in Halloween themes.
"Jimmy won't be home 'til almost dark. He's going to trunk or treat with friends."
A term originating in the South... To "trick-or-treat" is to spoil and spend money on a female, whether it is taking her out to dinner, taking her shopping, or anything else of that sort.
Of course, the average male would never "trick-or-treat," due to ego or pride. A female would have to earn the right to have the male "trick-or-treat."
"I don't take 'em out to eat / I ain't here to trick-or-treat / I ain't tryin' to fix your weave..." (Slim Thug - I Ain't Heard Of That)
when young human children go soliciting door to door. They yell trickortread, which implies them to give them something, either money, fruit (ick), or candy (think obesity), or they will egg/tepee the house. A common sight on October 31. See Halloween}