If you're a male who decides to stay abstinent until either marriage or a committed relationship, the exception made to only engage in cunnilingus (oral stimulation
on the female genitalia) as a form of erotic
foreplay or as an alternative
This may seem
highly hypocritical to many people since "oral sex" is viewed as being just as intimate as vaginal intercourse, but the idea
is keeping your
own private area "pure" until you have either met the right person and/or have gotten married.
The cunnilingus exception
is not for everyone, but it is a personal lifestyle choice
that a few people (including myself) have made. This can also be for religious, spiritual, or philosophical reasons.