Man C: Thirty. Man D: Forty-two. How often do you go down on women? Is it voluntary or do they usually ask? Man A: I go down on my girlfriend regularly. We don't do that every time we have sex, but I'd say a couple times a week on average. I don't need to be asked because it gets me turned on to do it, but sometimes she'll put in a special request for it if she's particularly in the mood. I go down on her pretty much every time we have sex. I'm shocked that the number of women who have said no is greater than zero.