A Chump at Oxford (1940)
First half is a remake, and the title is used in the dialog
The title is shown on a small theatre playbill that Candy's wife holds (though the title is actually a working title [Chumps at Oxford] for the film, which was in production at the same time).
The Projectionist has a poster of this film in his apartment.
Dialog line "Chin up/Lift up your chin ... BOTH OF THEM"
Documentary about this title's stars
Throwing pillows back and forth, slapping heads