Senator Rick Santorum is a disgusting man. His statements on same-sex relationships and abortion are morally repugnant, but that’s not the entirety of his revoltingness. Santorum’s rhetoric is designed to disgust. When he compares gay sex to incest and bestiality, he’s tugging at your sense of taboo so he can elicit the same revulsion that he obviously feels. There’s no ethical association between gay sex and the rape of children or animals – the only common feature is that they fall into the group called “things that make Rick Santorum go ewwwww”.