Birthmas

The birthday of a person that happens to coincide with December twenty-fifth, or Christmas day.

Jeremy is one of the few people I know who has a birthmas.

by Alcabum November 15, 2009

Birthmas

When a family is poor and can't afford presents for birthday and Christmas so they get them one present for both.

Tyler's parents give him a birthmas present every year

by Collkid69690 December 23, 2014

birthwarming

Combination birthday and housewarming party

My birthwarming is going to be sick!

by KCgras March 22, 2010

Harry Birthmas

When your birthday is so close to christmas that people give you one gift for both occasions.

Harry Birthmas! I'm too lazy to give you two different gifts at two different times.

by Nosila November 10, 2010

birthmorrow

Birthmorrow - often mistaken for birthday in advance.
this obviously incorrect however...
If "today" is the "birthday", then "birthmorrow" is the day AFTER the "birthday"...

Sorry I missed your birthday. Oh, this present is for you. Happy Birthmorrow!

by dat-guy August 2, 2012

Bombay Birthmarks

The large pinkish-red blotches, present just above the knees of a short-wearing person, immediately after exiting the "crapperie", after a night of over-exuberance at the Akash Balti House.

"Sporting a nasty pair of Bombay Birthmarks there Tony".
"Yes, I know, that Jalfresi Extra Hot I had last night has gone right through me like rusty water"

by woty July 30, 2008

birthmate

A friend or acquaintance who shares a birthday with you; ideally the exact same birthdate, including year.

My friend Tamara and I are birthmates because we were born on the exact same day.

by deviant85 January 14, 2009