Pam Spaulding at Pandagon brings my attention to the Rev. Willie Wilson, who argues for the immorality of lesbian anal strapon dildo action* with the memorable phrase, "Your butt ain't made for that!" The idea that being anally penetrated by another woman's strapon dildo runs contrary to the true function of the butt is consistent with a significant strand of Christian sexual philosophy. St. Thomas Aquinas held that the proper function of the penis was as an instrument of reproduction, since God had designed it for that purpose. Ejaculating into things other than human vaginas -- for example, mouths, anuses, animals, and even one's hand for purposes of masturbation -- was thus regarded as immoral.