It Happens Every Spring (1949)
Manager Jimmy Dolan: [Kelly unexpectedly walks off the field, in the middle of a game, to avoid being seen by Professor Greenleaf and Manager, Jimmy Dolan wants to heavily fine him] Kelly's not indispensable!
Monk Lanigan: I know, but the team can't get along without him.
Prof. Vernon K. Simpson aka King Kelly: [all were in Edgar Stone's office] No, I don't think so, Mr. Stone, I know it.
Edgar Stone: Know it? I have never met such bland conceit.
Manager Jimmy Dolan: I told you, he's a crackpot.
Edgar Stone: No he's not. He's just a conceited jackass.
Manager Jimmy Dolan: All right. You talk to him. I'm going to batting practice.
[During a conversation with Professor Greenleaf, Professor Joe Forsythe verbally says this movie's title, in the last sentence, as their conversation concludes, word for word]
Prof. Joe Fosythe: It happens every spring.