undercase 

similar to lowercase but only when a letter should be uppercase, and its not

when a letter that should be uppercase but is instead written with lowercase

person 1: "i'm going to the masters today"

eng. teach: you mean, "I'm going to the Masters today?"

person 1: nope... all undercase

undercase by dvbowk April 28, 2011

Undercover Thug 

-Its a person that is bad or do bad things but to parents or any one that dont know the person is good or thinks is good
- Someone that most know a thug but others that dont believe it or dont know it
- Someone that looks innocent but does bad things

Undercover Thug- A wolf with sheep clothing
Undercover Thug- My son or daughter not a bad person but....
Undercover Thug- Opposite of a undercover cop
Undercover Thug- Someone that do bad things or live thug life but almost never get caught doing them.
(This could mean the same for undercover gangsta, or gangster to)
Undercover Thug- Unusual Suspect

Undercover Thug by tnst December 19, 2014

Undercover-bitch 

When someone acts like butter couldn't melt, but secretly they're a total bitch

Person 1: Hey did you see Madonna fall?
person 2: Yeah, but she's such an undercover-bitch, it was totally karma

Undercover-bitch by Joe D + Imie T February 28, 2015

Underclass Hero 

The latest album by the very successful band Sum 41.

It is their first album since guitarist David "Brownsound" Baksh left.

They did, however, incorporate another guitarist for recording and touring, Thomas "Brown Tom" Thacker, but will not include him in band photos or the crew list.

The new album includes hits such as Underclass Hero, Walking Disaster, and March of the Dogs. The other songs are Speak of the Devil, Dear Father, Count your last blessings, Ma Poubelle, The Jester, With me, Pull the curtain, King of Contradiction, Best of me, Confusion and Frustration in modern times, and So Long Goodbye.

I recommend this album to any fan of the band. Actually, I recommend it to anybody.

Just picked up Underclass Hero. It's amazing, dude.

Even without Brownsound?

Yeah!

Amazing!

Underclass Hero by Briiiiin September 26, 2007

Undercover hot 

a person who does not demonstrate obvious qualities of hotness but is actually very hot once you look for more than one minute. These people generally have good personalities because they are unaware of their blazing hotness, but rather believe themselves average.

dude, that guy at the crepe place was so undercover hot. I didn't know to eye fuck him until he gave us our crepes. I need to go back and give him my number.

Undercover hot by bombshell magee March 29, 2010

Undercover hoe 

A girl that acts like she's all innocent but it a hoe that loves sucking dxxk

This girl loved sucking me off behind doors no names undercover hoe

Undercover hoe by Undercover hoe October 3, 2015

Undercover player 

A male who claims to not be a player but actualy is.

A male who pretends to be a girls friend but really just wants to sleep with them.
He usually uses his angst over a recent breakup to lure unsuspecting females.

Person 1: I just realized he's an undercover player.

Person 2: how?

Person 1: He is still with one girl but is also trying to get with those two other girls.

Undercover player by El cucuy707 May 27, 2009