While oral_while_penetrating exist and fellatio_while_penetrating exist, cunnilingus_while_penetrating does not yet there are multiple images I've come across where this tag would be appropriate. Even cunnilingus_while_penetrated exists and seems to be underutilized as of current as I've certainly seen more than 20 posts of such a tag, so I believe there's grounds for such a tag to be made and utilized.

Such a tag would imply oral_while_penetrating, and cunnilingus of course.