How i know about hentai

I heard my friends talk about hentai.. so i asked them about it but they just laugh it off.. and then i tried to search about it but i dont know how to spell hentai at that time.. so, i spelled it like this.. 'handtie'.. luckily, mr.google understand what im trying to search.. how i miss my innocence mind.. i wish i didnt know about this kind of things but im glad i run into yaoi.. but until now i cant stand the real bl live action or any bl drama.. i dont know why.. i love yaoi anime, manga and blcd but not the live action bl drama.. ㅠㅡㅠ