I would think it would be the same as French kissing , owo or any other fav really it comes down to a guy's hygiene a d basically the ladies descrection. I know I'm coming across as a right lick ass here with some of my posts but I couldn't give a shit I just respect the wishes. And I'll put it to some guys this way if you went to see a lady who advertised owo but she had poor dental hygiene I bet you wouldn't be long asking for covered or skipping oral altogether.