While Joe Pesci probably still holds the record for the most uses of the F-word in major movies by a single actor, Martin Scorsese's "The Wolf of Wall Street" has become the non-documentary feature film containing the most frequent use of that particular profanity.
'F--k' is used an estimated 506 times across the course of Wolf's three-hour runtime. That tops the previous record of 435 instances in Spike Lee's "Summer of Sam" in 1999, 428 in Gary Oldman's "Nil by Mouth" from 1997, and 422 from Scorsese's "Casino" in 1995.
The only other feature film in the past five years to come close to that count is 2012's "End of Watch" with 326, and it has a higher use of the word per minute than 'Wolf' - 2.99 per-minute versus Wolf's 2.83. Wolf topples its total count though thanks to its much longer runtime.
2005's documentary "F--k", which explores the word itself, holds the all-time record with 857 uses and 9.21 instances of it per-minute.