Answering for my bf: he always seems to want me to give him a BJ. He wants to give anal sex to me, but I can't have it, hemorrhoids, or if not that, i tear easily as I'm always bleeding a bit from my butt.
I voted for my guy. He LOVES oral. If I could be on his cock 24/7/365 he'd be as happy as a pig in poop.
When my wife is giving me oral, she is an active participant in the sex. Anal requires a warm body, and no active participation. I am all for her involvement, which is the greatest turn on. It lets me know she wants to please me.
Oral for me, just an opinion no concrete evidence why.
haha in honor of the movie clerks "you never go ass to mouth!, You've never gone ass to mouth?, I've never gone ass to mouth!, Becky have you ever gone ass to mouth?, What you never go ass to mouth!, See... You never go ass to mouth."