Hoi Polloi (1935)

"Meet the new darlings of society!"

A professor bets that he can turn the stooges into gentlemen. After many attempts to teach them etiquette, he brings them to a fancy society party. The stooges' new found manners don't last very long, and the party quickly degenerates. By the end, the other guests have adopted stooge-like behavior and the stooges leave as gentlemen.