Monster Closet: origin: Noun. Wolfenstein 3-D. but has also been found in later games such as Doom, Doom II, and the recent Doom III. Monster Closets are defined as being small chambers that monsters lurk in awaiting a victim to approach a certain vicinity or acquire a triggered object. Upon tripping said trigger, the wall (closest to the victim) of the Monster Closet is suddenly opened effectively causing the victim to wet his/her pants in terror and spray gunfire wildly in an attempt to erradicate said monster.
Person 1: "I totally hate the new Doom III game."

Person 2: "Why's that?"

Person 1: "Because it's full of monster closets that constantly make me have to change my underwear."
by [q3w]The Soup Nazi August 26, 2005
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a person of homosexual tendancies, but does not tell anyone for a long time. They spend a long time "in the closet" thus making them a closet monster.
guy 1: "man did you hear? Lance Bass finally admitted he was gay"

guy 2: "yeah it's about time, that fag was such a closet monster."
by Ryan July 27, 2006
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Someone who’s in the closet about there gender or sexual orientation and says and does homophobic and/or sexist thing as a means to cover up the fact that there in the closet
Greg calls woman hoes and bitches and refers to gays as faggots

Greg is a closet monster
by Anna K Carey June 28, 2021
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This is where you hide alot of your friends in a room where you know you will have sex, normally done at a party or gala event.

You take a girl (or rarely, a boy) whom you have no respect for into the room and commence having sex with her/him.

Right at the moment of climax, you give the prearranged signal and all of your friends emmerge laughing to scare and severly embarrass the victim
Dude, did you hear about Ellen?

No what happened?

At that party last weekend Cole Closet Monstered her! Matt, Jordan, and Evan were all hiding in the room
by SwissCanadian March 31, 2009
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A person who acts goody goody in public but then when alone with a person of the opposite sex they.......LOVE THE COCK!!!!
Man, Jasmine is a massive closet monster!
by Pimpin November 20, 2004
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When you take/place a turd in a closet with the intention of someone else finding it.
David did you leave me a Cleveland Closet Monster again?!!!
by Amsygirl January 11, 2010
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Your secret gay side, that only appears during Fridays
Menisnt1: Hey man did you know it wa-
Menisnt2: YOU MEAN GAY FRIDAY
Menisnt1: OMG LIKE IT's MONSTER IN YOUR CLOSET
by Mexxican Trump April 05, 2019
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