An Undercover Slut is a guy or girl who seems quite innocent and maybe even a bit prude but is actually a sexual deviant when given the chance to be. Being that the person is generally quiet and reserved about said deviancy, it's quite surprising when they reveal their true colors and you often find yourself very, VERY intrigued and wanting more. Just remember that they are, in fact, undercover, and have to uphold their mild-mannered alter-ego when exposed to the general public, and you must respect that. Also, don't assume that they've hooked up with tons of people- most Undercover Sluts like to reserve their sluttiness as to keep it meaningful and, obviously, undercover.
It's sort of like when the chick in the movie takes off her glasses and pulls her hair down and straddles you and you get the idea.
Guy 1: "Hey, you know that chick Gracie?"
Guy 2: "The one who always gets like, really good grades? Yeah, what about her?"
Guy 1: "That party last night, dude... You wouldn't be able to tell, but she is a MAJOR Undercover Slut."
Guy 2: "Oh my god, really? Wow... I never would have guessed it.. That's awesome."
Guy 1: "Yeah, but don't tell anyone man."
by SwaggieG September 8, 2013
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While you are getting dome, cum in the girl's mouth. She then spits the cum in your asshole, and you proceed to fart the cum all over her face.
Undercover José- I think its quite self explanatory
by ThatOneNozZ January 26, 2010
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A sardar who cleverly conceals his keski a.k.a “dastaar” with a cap, a fashion statement popularized by Indian Cricketer Harbhajan Singh in the late 90s.
Person 1: Does that guy have a patka under his cap?

Person 2: Yeah, he’s an undercover sardar.
by MassiDaMunda March 30, 2021
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Someone who appears to be innocent when it comes to sex, but what lies under this person's innocent appearance is a sexual freak. Could apply to "tame" looking people who are sexually wild, or a person who is into sexual kinks. Can apply to women and men, but used often to refer to women.
I brought this one girl home. I was afraid of what to do because she seemed really uninterested in being more than friends, but when I walked in on her completely naked in my room, I realised I had brought home an undercover freak.
by RandomBro November 6, 2013
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a thot that seems normal and does not look or act like a thot but secretly has a secondary identity where they engage in multiple thottie activities; they will not tell you that they are this so called "undercover thot" until encountered with evidence that they are indeed a thot
Scott: "According to an online thot detector test, we were able to discover that Jane was indeed an undercover thot."
From this, Jane was shocked that they discovered her second identity. She proceeded to deny these accusations.
by Gina Pagel $$$ January 7, 2015
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adjective/noun

1. To secretly feel strong dislike or hostility towards:
2. A negative or critically person:
Yo that triflin' ho is an undercover hater for sure, bro.
by Taehtogi December 28, 2016
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Someone who acts humble around others for the sole purpose of gaining popularity in large groups, or gaining favor with the opposite sex.
"Torrey's a really nice guy, and he's so funny and humble about how funny he is."

"That's just because he's trying to get in your pants Lauralee. The guy's an Undercover Douchebag"
by Stinkyfingers July 23, 2013
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