hendecavisible birthday

Hendecavisible birthdays are "special" birthdays in which your age is evenly divisible by 11. Typically celebrated only by eccentrics.

Congratulations on turning 33! Are you enjoying your third hendecavisible birthday?

by Steebu! August 10, 2006

Birthday present

The act of a female performing oral sex on a male, aka, a blowjob.

Dude, Kayleigh told me that for my birthday she might throw in an extra birthday present.(;

by Peter and the Sunday Steppers June 16, 2009

Birthday Candle

Putting you legs over your head and blowing a load in your own face while singing "Happy Birthday to Meeee"

No body remembered Marks birthday, so he gave himself the birthday candle in celebration of surviving another lonely year.

by JT, Rob Dog and Billy September 27, 2008

Birthday Slice

An unusually small slice, or portion, of food. In reference to the amount of slices a pizza is cut into when served at a birthday party.

I'm not too hungry, can you just get me a birthday slice?

by icetubes April 3, 2010

Birthday Sister

A female who shares the same birthday as you. You were born on the same day of the same year. You are not true siblings, but you share a significant bond
See Also Birthday Brother

Anna: Happy Birthday Robyn.
Robyn: Happy Birthday to you too, Birthday Sister

by Pablo2342 May 31, 2010

royal birthday

A 'Royal Birthday' is when your turn the age of what day of the month you were born

He's turning 16 on the 16th so it's his royal birthday

by Geeky_Dude16051991 September 20, 2013

it's your birthday

What occurs when you are expelled from your mother's uterus.

When I was born, the doctor slapped my ass and said "Boy, it's your birthday."

by Ann Hedonia August 1, 2004