You're thinking of hentai.
Hey, I have an anime obesessed sister, don't blame me. xD
Ever seen Axis Powers Hetalia? That's a yaoi, just not yaoi-hentai.
The guy in that link . . . I'm sorry, just . . . just no. xD
@Razor Leaf's video - That . . . was amazing. :3
No, Yaoi and Yuri are the extremes, the fluff and stuff is Shonen Ai for boys and Shoujo Ai for girls I believe.