"Casting this spell causes 1 orifice of the touched target creature to function as both an anus and a mouth. For example, in nature a starfish is Oroanal - it eats and defecates through the same orifice. The target creature must be touched successfully. If the target creature resists being touched, then the caster must make a Brawling skill check (see Chap, 8: Skills). If the caster successfully touches the target creature, then either the (01-50%) anus or the (51-100%) mouth becomes an Oroanal orifice. If the anus becomes an Oroanal orifice, then the mouth will become sealed shut; defecation will occur as usual, but food must be shoved into the anus where it will be digested. If the mouth becomes an Oroanal orifice, then the anus will become sealed shut, eating will occur as usual, but defecation emerges from the mouth."
January 1, 1970
https://en.wikiquote.org/wiki/F.A.T.A.L.