birth quake 

When someone has many, many, (too) many children.

"Wow...she really had a birth quake"

birth quake by BJCE September 10, 2006

Birthquake 

When a female in labor makes the final push to get the baby out, but lays a fart so long and loud it measures on the Richter scale.

Jesus, while Melissa was in labor with our son Jake and she made the final push to get him out, she dropped the loudest fart that had to measure on the Richter scale. It may have been the first ever Birthquake!

Birthquake by Tee Cee Deez February 29, 2020

birthquake 

An earthquake that occurs on one's birthday.

Danny: Holy cow, did you feel that? It's like the earth knows it's my birthday!
Alex: BIRTHQUAKE!!!!!

birthquake by juggleboy January 9, 2010

Birthquake 

The contractions a woman feels when giving birth.

Woman: Dayum, when I had Chewbacca I thought I was going to explode with the birthquakes!

Birthquake by BananaBurguer August 20, 2014

Birthquake 

This happens when a fat bitch has a baby. Usually caused by a rift in the fatbitchtonic plates.

Nurse: That 'birthquake' measured a 9.8 on the richter scale,
Doctor.

Doctor: Doctor.

Birthquake by gjkuol09 December 11, 2008

Birthquake 

Shaking of a woman while giving birth equated to the tremor caused during an actual earthquake

She went through a birthquake before her due date.

Birthquake by Jenn Regg January 16, 2019

Birthquake 

When a women gives birth to a child that has a equal sized or larger head then she does

My wife is still in recovery from having a birthquake. My son almost broke her in half when he came out resembling a lollipop.

Birthquake by ZSMC October 4, 2017