Then Came the Yawn (1934)

Parody trailers are a dime-a-dozen now but they were a real novelty when this short from Educational Pictures ("The spice of the program!") appeared in movie houses. Its satire of "coming attractions" hyperbole encompasses hillbillies singing "She'll Be Comin' Round the Mountain" in the manner of synagogue cantors and a gag set in the Frozen North.