One of the fascinating pieces of trivia below is true*, the other is false. Do YOU know which is which?

Deliverance (1972)

1) Billy Redden, the boy with the banjo, liked Ronny Cox, and disliked Ned Beatty. When at the end of the dueling banjos scene, the script called for Billy to harden his expression towards Drew Ballinger, Cox’s character, he was unable to fake dislike for Cox. To solve the problem, they got Beatty to step towards Billy at the close of the shot. As Beatty approached, Billy hardened his expression and looked away – exactly as intended. 

2) The infamous “Squeal like a pig” scene was extremely hard to film because Bill McKinney, who played the nefarious Mountain Man, refused to film the actual sex part of the scene on moral grounds, so director John Boorman turned to each man in the cast asking if they would body double for McKinney, and each one turned him down flat. Desperate, Boorman called around Hollywood to actors that he previously worked with, and was hung up on by Lee Marvin, Carroll O’Connor, John Vernon and Toshiro Mifune. Boorman was about to give up and scrap the iconic scene altogether when he received a call from Marlon Brando, who was filming The Godfather at the time and heard about Deliverance’s plight while on set. Brando told Boorman that he had just suggested a similar scene in The Godfather with Abe Vigoda, but director Francis Ford Coppola refused to film it, so he’d love a chance to offer his man-on-man lovemaking talents to Deliverance, since he studied male homosexual intercourse intensively for an Off-Broadway production of Caligula, and considered himself an expert. Boorman was thrilled, but Brando showed up to the shoot hours late and drunk as a skunk, then threw up at the sight of Ned Beatty nude and ran off into the night. Fed up, Boorman threw in the towel and used a robot to finish the scene, which Beatty would later describe as the most thoughtful lover he’d ever had.

*true trivia courtesy of IMDB.com