Ryuji-chi's Favorite

I'd like to answer this from my straight fundashi point of view. 1) That is probably because they see pleasure and want to imitate it. It looks like it feels good, so they might want to try it that way. 2) They aren't only looked down upon in yaoi. You see it in every genre. I'd say yaoi has that the least. 3) They probably like the seme/uke dyn......