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costumize

the verb comes from the word "costum" so suck it
I costumized a cool card with glitter
by SuccSuccMyRainbowAss January 7, 2019
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Hall Costume

A costume you wear to a Science Fiction Convention, ComicCon, or other event just to wear around the halls of the event. You have no plan to enter the costume in a contest (though you might be asked to if they don't have enough participants).
This is just my Space Ranger Flight Suit, a black jumpsuit with a couple of patches on it. I'd never wear this Hall Costume in the Masquerade Contest.
by Ozzie321 August 27, 2019
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For a GGHC you need 2 sets of arms (not yours), 1 pair of legs (again not yours), and a skull (DEFINITELY not yours). None of these body parts should be yours.

Step 1: Look for 4 arms you want and chop them off someone. They'll be screaming in pain as they bleed out. You may want to put them out of their misery so they shut up! Or let them suffer not your problem. Once you do that go to some shack where you won't get caught. Leave the 4 new arms there proceed to step 2.
Step 2: Look for a pair of legs that you want. These should match your arms but it'd be funer to get all of these parts from different people. Cut this person in half horizontally and take their legs. It'd be more realistic if it were a male. But cut their dick off. You have your own so you don't need theirs. When done take this to the same shack as you did in step 1. Leave the new legs there proceed to step 3.
Step 3: This's the final/hardest step. You need to take somebody's head. This'll kill them so look for a black jewish gay man. They need to die! Once you find the BJGM kill him. Decapitate him before showing mercy. When he's dead and headless shave the head down to just the skull. Take the skull to the same shack as the previous steps.
To finish you GGHC you need to put these parts all together. So sew the 4 arms ontop of eachother. Then sew the arm set of 4 to the 2 legs. That will create the body. Finally enter the body and wear the skull like Grievous. Rule #1: Never get caught. Happy Halloween!
Person A "I've built a General Grievous Halloween Costume for Halloween!"
Person B "What do you mean 'you've built'? What parts did you use?"
Person A "It would be better if you didn't know. But it looks sick!"
by Best User On Urban Dictionary September 16, 2025
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[cock costume]

Someone who is an idiot. It was said after someone called me an ass hat. They deserved it because they are a cock costume.
You are such a cock costume for using the word ass hat.
by casemaster October 21, 2008
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Costume Boner

A term meant to be used with the movie "The Avengers", a costume boner refers to any point in the movie where Loki's long-horned helmet and cape suddenly appear. This usually happens when he is exerting some type of power, such as when he instructs an entire crowd of people to bow to him and they obey. Much like a penis might become erect when the average male gets excited, Loki's costume tends to appear in similar events.
Hey look, Loki's kicking some ass! Oh look, another costume boner.
by Masked-Guardian February 11, 2013
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Pulling in Allen crouch in a Batman costume

While standing in the closet dress is your favorite superhero with a with a hole cut in the crotch watching two people have intercourse you masturbate vigorouslyinto each one of their shoes while maintaining a tight clench on your DC or marvel butt plug. At the end you jump out and say something like Shazam or gee Willis Batman and run away shamed by what you have done Allen crouch
Did you hear that somebody pulling in Allen crouch in a Batman costume the other day not in a pair of f****** doc martens the disgrace the funny thing is is that the butt plug fell out and it was a hello Kitty one not a DC One
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