The rape scene with Cloquet, in the form of a giant centipede with an Uncanny Valley version of the man's face, and poor Kiki who's ripped apart and bleeding as Cloquet violates him while a drugged but horrified Bill watches before fleeing.
Fooling around with an attractive woman is sexy. But while you're being humped by a misshapen...thing that is actually, or used to be, your typewriter (which, beforehand, grew a phallus after erotica is typed on it)? Not so much.
Worse, the production crew referred to the thing as "The Sex Blob."
The positively squick-y scene in the den where people suck semen from the teats of large insects. Yuck, just yuck.