ZERO #11 is my first comic book to be rejected by Apple — apparently dead children and horrific brutality are okay but oral sex a no-no
— Ales Kot (@ales_kot) October 29, 2014
It's never clear exactly who pulls books in such situations or why. But this will have been the scene we expect to have caused the problem.
It's not like they actually showed it or anything, as Charlie Brooker might say...