This paper is an inquiry into how a new truth about sleepiness is being produced in a society increasingly organized around the primacy of expertise and its representation in print and visual media. Sleepiness originally described a benign, naturally occurring corporeal moment, a precursor to sleep. Increasingly, however, a new and disturbing meaning of somnolence is found in a juncture of medical and epidemiological research, social movements, and popular culture. Alongside the idea that sleepiness is a tranquil promise of repose is another, emerging truth. Sleepiness, we are told, is hazardous to self and others, and, importantly, it is each person's responsibility to resist this seductive call of the body. How, we ask, is a private, routinely occurring state of partial consciousness deprivatized, linked to public health vernaculars, and transformed into a reprobate condition? This alternative, disturbing truth about sleepiness is shown to be emerging from several disparate, seemingly unrelated caches of scientific studies, social movement literatures, magazines and newspapers, and web sites. The ideas of Michel Foucault, who pioneered the contemporary study of discourse, are shown to be particularly apropos to this inquiry, though not without some modification to make them more amenable to a contemporary society shaped increasingly by what Zygmunt Bauman calls “liquid modernity.”