Across three studies, we examined the relationship between narcissism, prosocial behaviors, and the reasons why people engaged in them. Specifically, we examined how narcissistic people engaged in charitable donations, taking advantage of a naturally occurring mass charitable donation campaign, the ALS "ice bucket challenge" (Study 1). We also examined how narcissism was related to volunteering and other types of prosocial behaviors (Studies 2 and 3). Moreover, we compared and contrasted the prosocial responses of more empathic versus more narcissistic people (Studies 2 and 3). This paper can help scholars and practitioners to determine under which circumstances, and for which reasons, narcissistic people may exhibit prosocial behaviors.