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1. A person half one race, and half another. Often very attractive, sometimes believed to have superpowers.

2. A way to describe anything half one thing half another.
1. With a white mother and a black father, Barack Obama would be classified as a halfzie. This supports the attactive, superpower theory.

2. As opposed to being half full or half empty of milk, the glass is halfzies milk.
halfzie by eed258 January 9, 2009
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Someone that is or does something half/fully retarded, mentally handicapped, foolish or stupid. Pretty much some one REALLY DUMB AND IGNORANT!
Someone that is most likely a Mcturdle.

List of known Halfzies-
Paris Hilton and Perez Hilton
George Bush
AL Gore and People that believe in Global Warming
Don Vito
Anyone from the Hills/90210
Ron Weasley
Kelso (from that 70's show)
Michael Moore
Butters
Carrot Top
Jessica Simpson(Sexy halfzie though)
People that are Inbred
Randy(My name is earl)
Chris and Peter Griffin
Mike Tyson(Also Crazy/Savage)
O.J Simpson(should write a new book called "If I was a Halfzie")
Probably You Are Too...
Woooow... He doesn't even know how to construct a proper GB Nevin is such the halfzie!
Halfzie by Gee Wells February 4, 2009
absorbing a cost equally between two people
dude, do you want to go halfsies with me on that killer mud pie?
halfsies by So Mach May 9, 2006

double halfsies

When you can't decide between two things, so you and another person (usually a friend or acquaintance) each purchase one of the desired items and you both exchange half of each item with one another.

Note: Most often done when ordering food. This way you can eat both items you want instead of ordering two meals and looking like a fat ass.
Person 1: "Man, I can't decide between the teriyaki chicken or the club."
Person 2: "Yeah, me neither."
Person 1: "Double halfsies?"
Person 2: "You read my mind."
double halfsies by rkitch February 11, 2013

go halfsies 

to split (especially the cost of something) equally between two parties
I knew she wasn't going to put out, so I made her go halfsies on dinner.
go halfsies by bdb484 December 13, 2010

halfmiester 

Bestfriend that is a halfa, (half-virgin), with you. Not your girlfriend, boyfriend, spouse.
Sierra is my halfmiester.
halfmiester by Halffster August 10, 2009
Most usually (East coast), any person with any type of shine (black) in them.
Hey Gino, that new kid looks awfully tan. You think he is a halfsie? Antnee, you know his moms a shine, he’s a halfsie for sure.
Halfsie by Joe bananas August 18, 2021