A person that expects everyone to recognize and celebrate them without ceasing on their birthday. The day is often accompanied with emotional breakdowns.
Dudley Dursley whined and whined about his gifts on his birthday, something only a birthday brat would do.
by WhiteBoyPlayThatFunkyMusic April 24, 2017

by anonymous September 13, 2021

No, don't... Don't bitch about your birthday. You didn't invite me. It don't ever get invited to anything... And I only have $30... And "YoU'rE nOt GoInG tO sHoW uP oN mY DoOrStEp!"
Hym "Yeah, hey that's cool. You know, I didn't even get a birthday last year! I did get a Christmas though where I had to sit and listen to my brother's bitch girlfriend undermine my profound accomplishments. It's all she ever does! She just runs her bitch mouth."
by Hym Iam February 27, 2024

A derogatory term for a trans man that believes in transmisandry.
I can't believe Dylan really thinks trans men are less privileged then trans women... what a birthday boy!
by N. Grimalkin July 31, 2025

Jerry: Ben yesterday at your birthday party, I ate a whole bunch of pizza and now post birthday clarity hit me hard, as I now have shat for 5 hours straight.
Ben: I did not need to know that
Ben: I did not need to know that
by Spoodigus November 14, 2022

When a woman gives the male oral then performs anal on her and finishes in her AKA the birthday present
by Time teller January 09, 2023

Example- if your birthday is June 11th and you were born in 2005. 6+11+05=22, your rainbow birthday is when you turn 22!
by Bettyyyyyy February 27, 2023
