Prepartying among college students is an emerging topic of research and clinical focus. Unfortunately for some students, prepartying, or quick drinking before going out for the primary event of the evening, can lead to high blood alcohol levels, further drinking, and subsequent consequences. The present study was designed to explore the reasons for prepartying among a sample of 444 male and female students. Males and females reported arriving to a social event already under the influence, saving money, and making the night more interesting as their most highly endorsed reasons for prepartying. Males endorsed reasons relating to increased social and sexual facilitation with opposite sex peers to a greater extent than females. Although underage and legal drinking age participants did not differ in prepartying frequency or typical quantity, underage students reached higher estimated blood alcohol levels during prepartying. Finally, alcohol-related consequences were significantly and positively associated with nearly all reasons for prepartying for both men and women.