here is the explaination of YAOI

Y is for the "yama-nashi" yama suppose to be 
mountain in Japanese and nashi means no.

it means no mountain in direct translation but it 
really measn no plot of the story

O is for the "ochi-nashi", ochi is the 
interesting part of story

I is for the "imi-nashi" imi means "meaning" in 
nihongo. so it mean " no meaninging of story.

it makes YaOI,,,,,,,,,,

did it help?

thanks

tomo