Peter Fonda wouldn't smack John Robinson in the face, so the hands smacking John actually belong to the Cinematographer Eric Alan Edwards.
The montage of Sarah's boyfriends are actually men whom Asia met and dated during filming. At one point, there a still image of Vin Diesel, whom Asia did not date but admitted that she fancied.
Actor Jimmy Bennett claims his costar Asia Argento groomed him during the making of this film before eventually raping him when he was only 17 years old, one year younger than the age of consent in California where the assault allegedly took place. In a September 2022 New York Times article, "The Last, Painful Days of Anthony Bourdain," Kim Severson reported that the chef, author, and TV personality Anthony Bourdain, who dated Argento prior to his 2018 suicide, hired a private detective to investigate Bennett, and when Bennett asked Argento for $3.5 million (instead of suing her for sexual battery), Bourdain paid Bennett $380,000.
Before Sarah's strip scene, she is outside the club with two other women. One of the women is Cole and Dylan Sprouse's mother.
The title comes from a biblical verse in Jeremiah 17:9, "The heart is deceitful above all things and beyond cure. Who can understand it?"