Campus Knights (movie, 1929)

High-stepper Earl Hastings is continually mistaken for his twin brother, Ezra, a meek professor at a girls' seminary, and his constant flirtations in and around the dormitories--most notably with the daughter of the dean--involve Ezra in several compromising situations. Finally, a woman pursuing Earl for breach of promise unscrambles the twins with the help of the dean's daughter.