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A person who appears normal on the outside—sometimes even charming—but beneath the surface is emotionally decayed, morally bankrupt, and entirely hollow. Often manipulative, selfish, and abusive, they wear the appearance of humanity but lack all the qualities that make someone truly human: empathy, accountability, and emotional depth.

Used to describe:

Narcissists

Emotional abusers

Pathological liars

People who destroy others while playing the victim
“He’ll smile in your face, cry on command, and then destroy your life while blaming you for bleeding. Classic rotting core in a human costume.”

“She acted like a supportive friend until the moment I crumbled—then used every secret I ever shared against me. That’s not a person. That’s a rotting core in a human costume.”

“He says all the right words about mental health and healing, but he doesn’t believe in either—he just wants control. He’s nothing but a rotting core in a human costume.”

"He volunteers at a soup kitchen, cheats on his wife, lies to his kids, and hasn’t worked in years—but still walks around like he’s the second coming. He’s not a man. He’s a rotting core in a human costume."
by Roxx Farron June 9, 2025
mugGet the Rotting Core in a Human Costumemug.

Costume Coup

"Costume Coup"

A facade of patriotism, revolution with zero substance other then intent to cause fear.
On January 6, 2021, it was little more than half off bargin costumes, teeshirts, hats and flags. A facade intending to cause fear without much substance. Just a Costume Coup.
by yepsureyeahyesduh January 7, 2021
mugGet the Costume Coupmug.

Whiskey and Coke Costume

A costume choice made popular by the swinging community in the late 90’s. The couple who arrives wearing this is meant to indicate to other swinging couples that their preference in the bedroom is anal sex. The person who wears the whiskey outfit is said to prefer to receive, where the cola wearer prefers to give. There are several variations of this costume since the 90’s, including Jack & Coke, Jack & Ginger, Whiskey & Cola.
“Oh my! Can you believe Mark and Karen showed up in a Whiskey and Coke Costume? Do you think they know what it means?”
“Oh, I bet Mark knows what it means!”
by Bobby Butt Stuff October 16, 2021
mugGet the Whiskey and Coke Costumemug.

costuming

/ˈkɑstum/

countable, uncountable the clothes worn by people from a particular place or during a particular historical period
costuming
The actors were still in costume and makeup.
She has four costume changes during the play.
He went to the party in a giant chicken costume.
a costume designer
by Karelyz January 26, 2018
mugGet the costumingmug.

costumize

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

[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
mugGet the [cock costume]mug.

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