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A birthtard is someone who believes President Barack Obama isn't a natural-born citizen despite all evidence to the contrary. Birthtards are similar to moon conspiracy theorists because of their unique abilities to ignore reality and substitute their own.
The crazy woman yelling at congressman Mike Castle asking him why congress isn't looking into Obama's birth certificate is a birthtard.
Birthtard by dragon17 July 26, 2009
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Combination of the term bitch, which means someone who complains, yells, and is always in a bad mood, and retard, which means someone who consistently does incredibly stupid things.

Definition: A whiny and bitchy person who is constantly acting like a retard.
Bitchtard by Conk April 20, 2004

birthmasday present 

A present that unfortunate kids like me must get when you want something that the family can only afford if you combine your birthday present money with your Christmas present money. Thus, you don't get anything for one of those holidays.
"Dude, how did you get that iPod Touch?"

*sigh* "It was a birthmasday present."
birthmasday present by myketuna December 29, 2007

Birthterday

The day after someone's birthday. Most commonly used when someone forgets someone's birthday and wants to wish that person a happy birthday anyways.
Sorry I forgot your birthday yesterday, but happy birthterday!
Birthterday by datoneperson December 6, 2010
A word that mixes the words: bitch and retard becoming: bitchtard.
A very stupid woman; someone who is a slut and a hoe. Usally refers to woman who makes a big sexual or flirty mistake. She steals a guy or cheats. Or it could just be a douchebag way of a describing an air head.
Ah! That bitchtard stole my boyfriend.

Damn! That bitchtard was cheating on me with her cousin!

She's a crazy bitchtard if she thinks I'm gonna just forgive her after that!
Bitchtard by CheezyPumpkinPie April 13, 2009

Birthsary 

An annual event that celebrates the fact that your wedding anniversary and birthday are on the same day. You can then say "Happy Birthsary" to celebrate both with the efficiency of one.
"Happy Birthsary dude!"
Birthsary by BHI September 19, 2014

Birthmark 

A mark given to someone at birth by God because he decided it should grow on that person in the certain place. Sometimes they look really cute and attractive and are not moles. Most people who have them don't like them but it usually makes them more appealing cause they are different than the rest of us cause they are more special.
Person 1:Did you see that mole on Ashlynne's face?
Person 2:Dawg that ain't no mole, thats a birthmark aka beauty mark.
Person 1:Oh yeah you're right cause she looks so pretty with it.
Person 2:I know shes perfect and to top it off she has that beautiful birthmark on her face to make her look even more beautiful. Can I call her an angel?
Birthmark by Ashlynne's lover August 8, 2014