Virtue ethics has been challenged on empirical grounds by philosophical interpreters of situationist social psychology. Challenges are necessarily challenges to something or other, so it's only possible to understand the situationist challenge to virtue ethics if we have an antecedent grasp on virtue ethics itself. To this end, I first identify the non-negotiable "hard core" of virtue ethics with the conjunction of nine claims, arguing that virtue ethics does make substantive empirical assumptions about human conduct. Next, I rearticulate the situationist challenge in light of these nine claims. I then turn to a discussion of specifications of several responses typically made by defenders of virtue ethics against the situationist challenge, arguing that most of them either are unsound or give up one of the elements in the hard core. A few, however, survive this criticism, and so I conclude by suggesting ways in which the situationist challenge might be not so much resisted as co-opted. Situational influences can be used to help people simulate virtue, a phenomenon I call factitious virtue.