The Friday File: The most foul-mouthed film, based on swears/1,000 words is Nil by Mouth at 41.3, followed by Uncut Gems at 35.1 and The Wolf of Wall Street (TWWS) at 29.4. Counting by number of swear words/movie, TWWS wins at 715, followed by Uncut Gems at 646 and Casino at 606. The most foul-mouthed actor, Jonah Hill at 22.9 swears/1,000 words and total swears in all movies at 376.