Birthrate 

The birth-to-death in European, American and some Asian countries is currently negative. This is a bad thing, but people either don't want to or cannot sustain properly a family any longer. The birthrate is roughly around 1.5 children per couple. This means that in about 80 years these countries would lose about a quarter of their current population. Most African countries are exceptions. Reasons for why "rich" countries have a negative birth-to-death ratio:

1. Reduction of salaries: This makes any family to become hard-to-support.
2. The invention of the condom: As unlikely as it may seem, this is a major problem. Most people don't marry any longer, since they can now engage in sexual relationships without procreating.
3. The lack of housing: Big houses are now very expensive, so there is no room for more than a couple or a small family.

Instead, in poorer countries (like African) have a huge birthrate, eventually reaching more than 4-5 children. Previously, they had a huge premature mortality rate, but new aide programms reduced it significantly. So the population in poorer countries might double soon.

The European birthrate is low.

Birthrate by John the Eagle September 3, 2016

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

Birthdaze 

A state of mind frequently experienced in the days leading up to and immediately following one's birthday, characterized by confusion, euphoria, irrational behavior, and severe hangovers.

I tried to wish Dave a happy birthday last squeakend, but he was deep into his birthdaze and thought I was God.

Birthdaze by bubbleandsqueak February 6, 2012

Birthdate

The date on which one was born.

The birthdates of Dominican baseball players can be difficult to find out.

Birthdate by Diggity Monkeez May 20, 2005

Birthdayee 

Social Networker connected to your social network and has access to your personal information which includes your date of birth, and uses this information to send you "Happy Birthday (your name here)" post to your cyber-wall. The Social Networker may not actually know you, but has been added to your social network previous to your birthday.

I was hit on my birthday by over 50 birthdayee messages

Birthdayee by SupaNative January 22, 2011

Birthdayer

The being bombarded by birthday well-wishes on the same date each year by joining a social network (a.k.a. Facebook) and including their birth-date for all to see.

Celebrate your birthdate and become a Birthdayer today!

Birthdayer by SupaNative January 22, 2011

Birthaversary

Birthaversary means the Anniversary of your birth.

Happy Birthaversary!!!

Birthaversary by Bill Chalk June 15, 2021