Neon Bull (Portuguese: Boi neon) is a 2015 Brazilian drama film directed by Gabriel Mascaro. The film premiered at the 72nd Venice International Film Festival and won the Horizons (Orizzonti) - Special Jury Prize. It was also shown in the Platform section of the 2015 Toronto International Film Festival,^[2] where it received an honorable mention from the jury.^[3] At the 31st Warsaw International Film Festival it received the main prize of the International Competition, the Warsaw Grand Prix.^[4]

Iremar (Juliano Cazarré) is a bull handler, working for a traveling group who transport bulls from rodeo to rodeo, who dreams of becoming a tailor and making fashionable clothing for women. He finds an outlet for his creativity making custom horse masks and provocative outfits for Galega (Maeve Jinkings), the group's driver who also performs sexually enticing dances for groups of men after each rodeo. They are accompanied by Galega's daughter, Cacá (Alyne Santana); and Zé (Carlos Pessoa), a buffoonish bull wrangler who is the butt of the other's jokes. The film deals mainly with the interactions between the members of this group, interspersed with Iremar's attempts to design clothing, and rodeo scenes. After an attempt by Iremar and Zé to steal valuable horse semen from a stud auction goes awry, Zé is offered a new job as a horse wrangler; he is replaced in the group by Junior (Vinícius de Oliveira) a young, attractive, and vain, but kind, man who befriends Cacá and becomes sexually involved with Galega. During a rodeo, Iremar meets Geise, a pregnant woman selling cologne and perfume from a large factory where she also works as a nighttime security guard. After the rodeo, Geise brings a bottle of cologne to Iremar as a gift. Later, at night, he visits her at the factory, where he is impressed by the industrial clothing machinery. She seduces him, whereupon they engage in sexual intercourse.

• Juliano Cazarré as Iremar
• Maeve Jinkings as Galega
• Vinícius de Oliveira as Júnior
• Alyne Santana as Cacá
• Josinaldo Alves as Mário
• Samya De Lavor as Geise
• Carlos Pessoa as Zé
• Abigail Pereira as Fabiana

In the scene where Juliano Cazarré had to manually stimulate a horse, he was sure that Gabriel Mascaro had planned to use a prosthesis. Instead, when the director told him that he would have to actually touch the horse's penis, he refused to continue unless Mascaro did the same first. So in the end they both did the act.^[5]

The genuineness of the scene in which Juliano Cazarré had to have sex with Samya De Lavor, who was really 8 months pregnant, is disputed. Mascaro asked Cazarré to have an erection at the beginning of the scene.^[6] Cazarré said the sex was simulated.^[7] Director Mascaro said he was standing far from the action, so he could not see and he did not ask the actors how they performed it, but he admitted the result "is very persuasive" and done in only one take.^[8] More, talking about the camera position, he said that "The sex scene with the pregnant woman, if we were one step ahead, it would become a totally porn film".^[9]

The feature film had its first worldwide screening on 3 September 2015, at Venice Festival. Its first Brazilian session took place at the Rio Festival on 4 October, where it won four awards. The film reached the Brazilian commercial circuit in January 2016.