To understand this term it's good to know what the individual words mean in the context that they are in.

Yaoi is the Japanese word for male homosexuality. Put simply it means "gay". The word is actually an acronym that comes from the Japanese phrase, "YAma nashi, Ochi nashi, Imi nashi." meaning no climax, no point, no meaning. Yaoi has also come to describe a particular genre of Japanese shows (anime) and comics (manga) that depict male homosexual relationships. These types of shows are becoming increasingly popular among (mostly) female fans of anime and manga. Fans of yaoi often take their favorite male characters, from any anime or manga, and pair them together (regardless of sexual orientation in the original story).

The second word, lemon, is a term used amongst the fanifiction community. Quite frankly it means that there will be a graphic sex scene in any story designated as a lemon. These types of stories would be ratedp either NC-17 or X by the MPAA. Usually authors will inform the reader of any lemons at the beginning of a story. Lemons refer to any type of sexual activity that includes penetration of some sort. Another term that is used alongside lemon is "lime". This is simply a less graphic description of sexual acts. These stories usually do not go further than heavy petting. Lime's are also more commonly referred to as "shonen-ai" meaning boy's love in Japanese.

So if we combine the two words the meaning is: a story that graphically describes the sexual acts of two male participants whose characters usually come from Japanese anime of manga. Typically these types of stories focus completely on the sex scenes and consist of little-to-no actual plot.
A yaoi lemon: "Sasuke quickly shoved his cock into Naruto's ass hitting the fox boy's prostate and making him moan."

A yaoi lime: "Sasuke grabbed Naruto and desperately pressed his lips against the other boy. He could already feel himself growing excited and began to grind against Naruto."
by combo_bass January 17, 2007
Get the yaoi lemon mug.
1. Someone who is obsessed with Male/Male Sex

2. A Fan who LOVES Male/Male Sex & some forms are Fanfiction, Anime, Manga, Movies, ect.
Some parings (that I LOVE <3) are SasuNaru from Naruto, RikuSora from Kingdom Hearts the Game, YukiShuichi from (a poplar Shonen-ai series) Gravitation, YamiYugi from YGO, HoroHoroRen from Shaman King, ect.
That yaoi Anime was GREAT!!

I'm a MAJOR Yaoi Fan (really I am).

Yaoi Rules!!

Life needs more Yaoi (just wanted to say it ).
Get the Yaoi Fan mug.
Yaoi that only thoties and hoes like. Typicly based on popular anime such as attack on titan, free, and haikyu. Often the proportions and anatomy are unsettling or poorly drawn.
Thottie one: *sends thot yaoi*
Thottie two: "yass erin looks so hot!!! >//~//<"
by Jefftheslime May 10, 2018
Get the Thot yaoi mug.
When for example: Guy A is under the sexual treatment ,either masochist or sadist, of Guy J and enjoys it with his heart and body, and wants more even if he says to stop. This can also happen with more then 2 guys.
Those guys are doing yaoi hard .
by PandaPotatoe August 31, 2017
Get the yaoi hard mug.
yaoi where the men just look like women
lesbian yaoi is not the same as yuri
by ilovesharks23452235 January 19, 2023
Get the lesbian yaoi mug.
Pairing two male idols together in a romantic gay relationship.

Often done in the anime community.
Me-"OMG OMG OMG I ship Erin and Arman from attach on Titan so much!
Freind-"arnt they both guys?'
Me-"Yeah they are my favorite Yaoi Ship!"
by zach ull December 20, 2017
Get the yaoi ship mug.