 The account might have implausible implications, however. Anyone who prefers (heterosexual) oral sex to intercourse would be perverted. Moreover, any heterosexual couple that incorporate fetish objects, urine, feces, and so on, in their sexual intercourse would be sexually natural (Gray 1978: 190–192; Primoratz 1999: 53–54). Indeed, coprophilia can sink all the above accounts: two people who exhibit inter-personal attitudes in the form of multi-level perceptions, and who have sexual intercourse of the reproductive type, communicating healthy emotions sincerely, yet use feces in their activity would counter-intuitively not be perverted on any of the above accounts.