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26.
A Japanese abbreviation for "YAmanashi, Ochinashi, Iminashi" which translates to "without climax, without resolution, without meaning," and by the Japanese definition refers to doujinshi that support a non-canon, homosexual (male/male) couple and are very explicit.
In English terms, however, the word is much more broad and can refer to anything with any homosexual(only male/male) or boy's love themes in anime and manga, sometimes even expanding to non-anime/manga works, but often in connection with fanfiction.
"I hope that new Naruto/Sasuke doujin comes in soon, I'm afraid I'm suffering from a bit of yaoi withdrawl."

"Did you see that new Frodo/Sam yaoi fic? It was pure smut from start to finish."
by strawberry_flavoured_doom July 07, 2005
 
1.
Yaoi is a slang meaning 'boys love' or homosexuality that is used in the japanese language. Popular with fangirls who like their favorite anime guys to kiss.
Damn, I need some good yaoi fan-fics!
by Francesca December 20, 2003
 
2.
Yaoi is a Japanese word, which is actually something of an acronym. It comes from "YAma nashi, Ochi nashi, Imi nashi", which means "no climax, no point, no meaning".

In speech and writing, it's a slang term used to refer to stories that focus on homosexual relationships, usually between men. Yaoi tends to involve graphic sex, often with little or no plot. The female equivalent is yuri.

A related genre is shonen-ai, or "boys' love", which tends to involve less sex and more cuddling (and plot).
I love reading yaoi fanfiction!
Did you see that new yaoi manga?
by SolarCat August 16, 2005
 
3.
Gay poooooooooooooorn. ;D
Naruto: ahh! Sasuke! Not there..AHHH!
Sasuke:-Moans and groans-
~Yaoi~
by Rikachu July 06, 2006
 
4.
EVERYONE KNOWS it stands for Young Academics On Ice!! Gawd.

(at least, that's what you tell your parents... muahahaha...)
Mom & Dad: What're you watchin?

You: Yaoi.

Mom & Dad: ...What's that?

You: Uhm... Young Academics On Ice...?

Mom & Dad: Oh, okay! Have fun, then :]
by kougazluvr0413 October 06, 2008
 
5.
Anime, manga, or fanfic that depicts explicit relationships between two males. Usually focuses on the passionate/ lustful/ physical side of the relationship, unlike shounen-ai which focuses on the romantic/ loving/ emotional side. Usually R rated or higher.
Even if you have no problem with homosexuality, I would not recomment showing yaoi to your kids.
by K. R. H. August 19, 2005
 
6.
1. Y-A-ma nashi O-chi nashi I-mi nashi - translated: no climax, no point, no meaning.

2. Yamete! Atashi no Oshiri Itai! translated: Stop it! My butt hurts!
SasuNaru is a common yaoi.
by helpless otaku July 26, 2005
 
7.
A type of anime that involves gay male pairings. AKA BUTTSECKS!! Boy love.
There's different levels of yaoi. Some are light (shonen-ai) and some are pretty bad. It can be anywhere in between, too.
Let's watch some yaoi!
by Catnip October 27, 2006