Green’s Dictionary of Slang

nudes for dudes n.

(US campus) a course in art.

[US]W. Safire What’s The Good Word? 300: More recent examples [of nicknames for courses] are astronomy’s ‘Stars for Studs,’ art’s ‘Nudes for Dudes,’ psychology’s ‘Nuts and Sluts,’ European civilization’s ‘Plato to NATO,’ anthropology’s ‘Monkeys to Junkies,’ and comparative religion’s ‘Gods for Clods’.