Halfagain 

Those 'rare' birthdays where the number for the age, when read from left to right, the second number is half of the first. For example 21, 42, 63 and 84 are Halfagain birthdays. This applies only to two digit birthdays, if you're 105 that's special enough in itself chumley.

My dad decided to help me celebrate my first halfagain birthday by giving me my first beer!

Jeanne is celebrating her next to last halfagain birthdays at burning man this year.

Halfagain by Doc Primo Herb November 25, 2018

hallagan 

Men whose alcohol tolerance is so low that they are often the first to pass out at parties or any drinking event. However, you are not considered a Hallagan until your face and body is completely covered in permanent marker.

After last night you are Ryan the Hallagan, MAN UP!

hallagan by Jman-11 March 27, 2008

half again 

One and-a-half times as much as something.

"Indeed, the first year of the office's ad campaign, ABC grabbed nearly $30 million worth, half again as much as Fox, its nearest rival at $20 million."

Source: Article on US Gov't Pot Propaganda

half again by Adam Laughlin September 22, 2005

Halfgan 

A halfgan is a midget from afghanistan that troops will rarley see while on patrol. It is common to call out confirmed Halfgans for everyone to see.

(guy one) There is a confirmed Halfgan at nine 'o' clock

Halfgan by ......1...... October 12, 2009

Halfgani 

Anything with a vagina that is half one ethnicity and half another ethnicity

Look at her she's hot yeah but I don't have halfgani's

Halfgani by California finest August 29, 2021

halfaxing

The act of repeatedly coming into a group chat, greeting and saying nothing else.

I asked them whow they were but they didn’t answer. They’re just halfaxing

halfaxing by Mr. Hopeless February 1, 2022

halfakin 

Undetermined mixed race.

I'm a half a kin to everybody I'm a halfakin

halfakin by anonymous July 4, 2022