Birth a Chocolate Smurf 

Slang for excreting fecal matter.

"Sweet mother of God, I really need to birth a chocolate smurf!"

Birth a Chocolate Smurf by The Duke of Alcatraz October 4, 2008

birth a food baby

Defecation after a particularly large feast.

Man I really have to birth a food baby after all that food!

birth a food baby by anniethedog December 4, 2014

Birth canal road rash 

A newborn baby whose face looks like it suffered from severe road rash when in reality it's just a potential side effect from a natural birth.

That baby definitely has birth canal road rash!

Birth canal road rash by kiki057 March 10, 2017

Birth Wallet 

Vagina

Coined by Theo Von- This past weekend podcast! This girl wanted me to get at her birth wallet standing up behind the bowling alley.

Birth Wallet by Revival31313 July 11, 2018

Birth One 

Taking a massive shit. To gestate and birth a turd of notable size and proportion.

I’m headed to the shitter. I’m fixing to birth one.

I just had an ass splitter. I knew I was about to birth one. The turtle was peaking earlier.

Eating all this curry guarantees I’ll birth one that’s real wet.

Birth One by Eaton Holgoode December 19, 2018

birth certificate 

The abortion clinic's apology letter to your mother.

Doctor: I'm sorry ma'am, the procedure didn't work. We're sorry, you're going to have a semi-retarded baby boy. I hope this birth certificate helps.

Mother: Uhhh...what?

birth certificate by JTurskz October 5, 2007

birth sex 

The sex you are born with, based on your sexual organs alone. A child born with a penis has a male birth sex, a child born with a vagina has a female birth sex, and a child born with some form of combination or lack of the two has an intersex birth sex.

Generally used for those who in some way work against their birth sex, especially in the transgender community.

"His birth sex is female, but because he is a transsexual and has transitioned, he is now in every way male."

"Just because her birth sex says she's male doesn't mean she actually is a guy."

birth sex by Alexandria January 1, 2005