His Nibs is a 1921 American comedy film directed by Gregory La Cava and starring Chic Sale and Colleen Moore.
"The Boy" (Sale) leaves a small town in the film-within-the-film to get rich in the city, but he is swindled out of his money, his clothes are stolen, and he is forced to become a dishwasher to pay his rent.
The original The Smart Aleck appears to have been a spoof of the popular story of the young, unspoiled man who goes to the city, fights off temptation and manages to save his sweetheart in the end.
That format of film was still very popular at the time, and as Chic Sale was best known for his great variety of caricatures, it is possible that playing only one character ("The Boy," in the best D.W. Griffith style) was poorly received.
The new, framing story consists of Sales playing most of the parts himself, including the spinster organist but chiefly as the projectionist, who has cut the title cards from the film so he can give the audience his own interpretation.