According to George Plummer, Freud interpreted the incident as a symbol of oral penetration, and used it to develop his theory that Moses and Aaron had a homosexual relationship.

The episodes were frequent and included oral and anal penetration.

I never asked her, but I don't imagine oral penetration figured as high on her list of priorities as it did on mine, and she could probably have done without the anal variety altogether.

If of appropriate sizes, they can be used as gags, for oral penetration for a sort of artificial fellatio.

They may be used for vaginal and anal penetration as well as for oral penetration.

This includes rape (such as forced vaginal, anal or oral penetration), inappropriate touching, forced kissing, child sexual abuse, or the torture of the victim in a sexual manner.