Absorption
Abuse
Ageplay
Animal Anatomy (female genital)
Ballbusting
Cannibalism
Castration
Coprophilia
Cock Fucking
Diapers
Egg-laying
Extreme-sized organs
Gerontophilia
Guro (except fruitguro)
Impaling
Necrophilia
Pedophilia
Scat
Violence
Feral pron (semi-feral/semi-anthro is ok)
Milk