Martin Scorsese's new film The Wolf of Wall Street sets the all-time record for use of the f-word. According to Wikipedia, the word is used 506 times over The Wolf of Wall Street's 180-minute running time.
Previously, the record was Spike Lee's 1999 film Summer of Sam with 435 instances. Wolf of Wall Street isn't the first time Scorsese has dabbled in the profane. The director has other projects in the f-word top 20, including Casino (422) and Goodfellas (300).